decrypt.php

$cryptedResponse = "ea3c818e637041a0: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";
$iv_size = openssl_cipher_iv_length('AES-256-CBC');
$data = explode(":", trim($cryptedResponse));
$iv = $data[0];
$cipertext = hex2bin($data[1]);

$encryptionKey = "key_here";

$decrypted = openssl_decrypt($cipertext, 'AES-256-CBC', $encryptionKey, OPENSSL_RAW_DATA, $iv);

dd($decrypted);