CODE EXAMPLE FOR PHP

php curl

$data = json_encode(array(
    "ShortCode" => "600981",
    "ResponseType" => "Completed",
    "ConfirmationURL" => "https://mydomainx.com/confirmation",
    "ValidationURL" => "https://mydomainx.com/validation",
));

curl_setopt($ch, CURLOPT_POSTFIELDS, $data);