IK-SIGN FROM WEBHOOK:
"; echo "bb1702d488a40091ebd5414bc6f524e203e2c5e36b24a1b86e243dad440bb557

"; $payloadToSign = $path . $raw; // Generate signature using hash_hmac directly on the constructed string $expected = hash_hmac('sha256', $payloadToSign, $secret); // --- Output debug info (UPDATED) --- echo "DEBUG INFO
"; echo "Callback URL: $callbackUrl

"; echo "Payload to Sign (Un-escaped):
"; echo htmlspecialchars($payloadToSign) . "

"; echo "EXPECTED SIGNATURE:
"; echo $expected . "
";