diff --git a/src/Traits/Address.php b/src/Traits/Address.php
index 3a71db8..e11005f 100644
--- a/src/Traits/Address.php
+++ b/src/Traits/Address.php
@@ -82,7 +82,7 @@ public function updateContactAddress(string $id, array $data = [], string $versi
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('contact-addresses/'.$id);
         $this->setRequestType('PUT');
@@ -109,7 +109,7 @@ public function createContactAddress(array $data = [], string $version = 'v1'):
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('contact-addresses');
         $this->setRequestType('POST');
diff --git a/src/Traits/Auth.php b/src/Traits/Auth.php
index 80798f0..29a20da 100644
--- a/src/Traits/Auth.php
+++ b/src/Traits/Auth.php
@@ -19,7 +19,7 @@ trait Auth
     public function login(array $data = [], string $version = 'v1'): mixed
     {
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint($version.'/auth/login');
         $this->setRequestType('POST');
diff --git a/src/Traits/Bank.php b/src/Traits/Bank.php
index 22f3cd8..0b0f123 100644
--- a/src/Traits/Bank.php
+++ b/src/Traits/Bank.php
@@ -84,7 +84,7 @@ public function updateBank(string $id, array $data = [], string $version = 'v1')
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('banks/'.$id);
         $this->setRequestType('PUT');
@@ -111,7 +111,7 @@ public function createBank(array $data = [], string $version = 'v1'): mixed
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('banks');
         $this->setRequestType('POST');
diff --git a/src/Traits/BankAccount.php b/src/Traits/BankAccount.php
index 2caa4b4..8aa7bc2 100644
--- a/src/Traits/BankAccount.php
+++ b/src/Traits/BankAccount.php
@@ -92,7 +92,7 @@ public function updateContactBankAccount(string $contactNumber, string $contactB
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('contact-bank-account/'.$contactNumber.'/'.$contactBankAccountId);
         $this->setRequestType('PUT');
@@ -121,7 +121,7 @@ public function createContactBankAccount(string $contactNumber, array $data = []
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('contact-bank-account/'.$contactNumber);
         $this->setRequestType('POST');
diff --git a/src/Traits/BankBranch.php b/src/Traits/BankBranch.php
index 432f27a..56cbb93 100644
--- a/src/Traits/BankBranch.php
+++ b/src/Traits/BankBranch.php
@@ -83,7 +83,7 @@ public function updateBranch(string $id, array $data = [], string $version = 'v1
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('bank-branches/'.$id);
         $this->setRequestType('PUT');
@@ -110,7 +110,7 @@ public function createBranch(array $data = [], string $version = 'v1'): mixed
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('bank-branches');
         $this->setRequestType('POST');
diff --git a/src/Traits/CDV.php b/src/Traits/CDV.php
index 4240b9e..82115eb 100644
--- a/src/Traits/CDV.php
+++ b/src/Traits/CDV.php
@@ -23,7 +23,7 @@ public function verifyCDV(array $data = [], string $version = 'v1'): mixed
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('cdv/verify');
         $this->setRequestType('POST');
diff --git a/src/Traits/Contact.php b/src/Traits/Contact.php
index fdfff9b..152fc15 100644
--- a/src/Traits/Contact.php
+++ b/src/Traits/Contact.php
@@ -90,7 +90,7 @@ public function updateContact(string $id, array $data = [], string $version = 'v
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('contacts/'.$id);
         $this->setRequestType('PUT');
@@ -148,7 +148,7 @@ public function createContact(array $data = [], string $version = 'v1'): mixed
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('contacts');
         $this->setRequestType('POST');
diff --git a/src/Traits/Organisation.php b/src/Traits/Organisation.php
index aa4910b..8e6c84d 100644
--- a/src/Traits/Organisation.php
+++ b/src/Traits/Organisation.php
@@ -83,7 +83,7 @@ public function updateOrganisation(string $id, array $data = [], string $version
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('organisations/'.$id);
         $this->setRequestType('PUT');
@@ -110,7 +110,7 @@ public function createOrganisation(array $data = [], string $version = 'v1'): mi
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('organisations');
         $this->setRequestType('POST');
diff --git a/src/Traits/Product.php b/src/Traits/Product.php
index f19c3f0..d9b0a7f 100644
--- a/src/Traits/Product.php
+++ b/src/Traits/Product.php
@@ -85,7 +85,7 @@ public function updateContactProduct(string $contactId, string $productId, array
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('contact-product/'.$contactId.'/'.$productId);
         $this->setRequestType('PUT');
@@ -113,7 +113,7 @@ public function createContactProduct(string $id, array $data = [], string $versi
         $this->init();
         $this->setVersion($version);
         $this->setData([
-            'form_params' => $data,
+            'json' => $data,
         ]);
         $this->setEndpoint('contact-product/'.$id);
         $this->setRequestType('POST');
diff --git a/tests/Traits/AddressTest.php b/tests/Traits/AddressTest.php
index bf8a45c..62091a7 100644
--- a/tests/Traits/AddressTest.php
+++ b/tests/Traits/AddressTest.php
@@ -72,7 +72,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('contact-addresses/'.$id)->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('PUT')->willReturnSelf();
 
@@ -93,7 +93,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('contact-addresses')->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('POST')->willReturnSelf();
 
diff --git a/tests/Traits/Auth.php b/tests/Traits/Auth.php
index 43cee46..b18c706 100644
--- a/tests/Traits/Auth.php
+++ b/tests/Traits/Auth.php
@@ -10,7 +10,7 @@
     $data = ['email' => 'user@example.com', 'password' => 'secret'];
     $version = 'v2.0';
 
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with($version.'/auth/login')->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('POST')->willReturnSelf();
 
diff --git a/tests/Traits/BankAccountTest.php b/tests/Traits/BankAccountTest.php
index 3ffc9b0..9202039 100644
--- a/tests/Traits/BankAccountTest.php
+++ b/tests/Traits/BankAccountTest.php
@@ -74,7 +74,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('contact-bank-account/'.$contactNumber.'/'.$contactBankAccountId)->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('PUT')->willReturnSelf();
 
@@ -96,7 +96,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('contact-bank-account/'.$contactNumber)->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('POST')->willReturnSelf();
 
diff --git a/tests/Traits/BankBranchTest.php b/tests/Traits/BankBranchTest.php
index b8b6223..2cbcdcc 100644
--- a/tests/Traits/BankBranchTest.php
+++ b/tests/Traits/BankBranchTest.php
@@ -72,7 +72,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('bank-branches/'.$id)->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('PUT')->willReturnSelf();
 
@@ -93,7 +93,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('bank-branches')->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('POST')->willReturnSelf();
 
diff --git a/tests/Traits/BankTest.php b/tests/Traits/BankTest.php
index 36c1696..84610d1 100644
--- a/tests/Traits/BankTest.php
+++ b/tests/Traits/BankTest.php
@@ -72,7 +72,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('banks/'.$id)->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('PUT')->willReturnSelf();
 
@@ -93,7 +93,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('banks')->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('POST')->willReturnSelf();
 
diff --git a/tests/Traits/ContactTest.php b/tests/Traits/ContactTest.php
index aa222d9..17985d5 100644
--- a/tests/Traits/ContactTest.php
+++ b/tests/Traits/ContactTest.php
@@ -72,7 +72,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('contacts/'.$id)->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('PUT')->willReturnSelf();
 
@@ -115,7 +115,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('contacts')->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('POST')->willReturnSelf();
 
diff --git a/tests/Traits/CvTest.php b/tests/Traits/CvTest.php
index 0ff3d72..d75ddd6 100644
--- a/tests/Traits/CvTest.php
+++ b/tests/Traits/CvTest.php
@@ -12,7 +12,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('cdv/verify')->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('POST')->willReturnSelf();
 
diff --git a/tests/Traits/OrganisationTest.php b/tests/Traits/OrganisationTest.php
index b99529d..a5c959c 100644
--- a/tests/Traits/OrganisationTest.php
+++ b/tests/Traits/OrganisationTest.php
@@ -46,7 +46,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('organisations/'.$id)->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('PUT')->willReturnSelf();
 
@@ -67,7 +67,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('organisations')->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('POST')->willReturnSelf();
 
diff --git a/tests/Traits/ProductTest.php b/tests/Traits/ProductTest.php
index 778628a..d87f9c1 100644
--- a/tests/Traits/ProductTest.php
+++ b/tests/Traits/ProductTest.php
@@ -73,7 +73,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('contact-product/'.$contactId.'/'.$productId)->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('PUT')->willReturnSelf();
 
@@ -95,7 +95,7 @@
 
     $mock->expects($this->once())->method('init')->willReturnSelf();
     $mock->expects($this->once())->method('setVersion')->with($version)->willReturnSelf();
-    $mock->expects($this->once())->method('setData')->with(['form_params' => $data])->willReturnSelf();
+    $mock->expects($this->once())->method('setData')->with(['json' => $data])->willReturnSelf();
     $mock->expects($this->once())->method('setEndpoint')->with('contact-product/'.$id)->willReturnSelf();
     $mock->expects($this->once())->method('setRequestType')->with('POST')->willReturnSelf();