const session_pro_payment_provider_metadata SESSION_PRO_PAYMENT_PROVIDER_METADATA[SESSION_PRO_PAYMENT_PROVIDER_COUNT] = {
    /*SESSION_PRO_PAYMENT_PROVIDER_NIL*/ {
        .request_refund_support_url = string8_literal(""),
        .subscription_page_url      = string8_literal(""),
    },
    /*SESSION_PRO_PAYMENT_PROVIDER_GOOGLE_PLAY_STORE*/ {
        .request_refund_support_url = string8_literal("https://support.google.com/googleplay/workflow/9813244"),
        .subscription_page_url      = string8_literal("https://play.google.com/store/account/subscriptions?package=network.loki.messenger"),
    },
    /*SESSION_PRO_PAYMENT_PROVIDER_IOS_APP_STORE*/ {
        .request_refund_support_url = string8_literal("https://support.apple.com/118223"),
        .subscription_page_url      = string8_literal("https://account.apple.com/account/manage/section/subscriptions")
    }
};

GetProProofRequest  request       = {...};                                           // Build the request object
std::string         request_json  = request.to_json();                               // Convert it to json
std::string         response_json = send_net_request(pro_backend_url, request_json); // Send POST request using your networking APIs
GetProProofResponse response      = GetProProofResponse::parse(response_json);

if (response.status == SESSION_PRO_BACKEND_SUCCESS_STATUS) {
  // Success! Use the values in the struct
} else {
  // Failure! Parsing errors or input validation errors. Errors are held in the errors array
  for (auto it : response.errors)
    fprintf(stderr, "ERROR: %s\n", it.c_str());
}