webhook validation mailpace laravel/php

webhook.php

<?php
// Retrieve the signature from the request headers and decode it from base64
$signature_base64 = $request->header('X-MailPace-Signature');
$signature = base64_decode($signature_base64);
if ($signature === false) {
    // Invalid signature encoding
    abort(400, 'Invalid signature encoding');
}

// Decode your public key from base64
$verify_key_base64 = 'Your Public Key from app.mailpace.com here';
$verify_key = base64_decode($verify_key_base64);
if ($verify_key === false) {
    // Invalid public key encoding
    abort(500, 'Invalid public key encoding');
}

// Retrieve the raw body of the request
$message = $request->getContent();

// Verify the signature
$isValid = sodium_crypto_sign_verify_detached($signature, $message, $verify_key);

if ($isValid) {
    // Verification passed
    return response('Verification passed', 200);
} else {
    // Verification failed
    abort(400, 'Invalid signature');
}

Looks like this should work:

$message = json_encode($response->getOriginalContent(), JSON_HEX_TAG);

Try that and let me know if you still face problems