Signature Notifications using PDFfiller PHP Client

When you send important documents containing sensitive information for signature, you need to know when your recipient has signed it. PDFfiller allows you to set notifications. You will receive an email each time your document is filled, edited or signed.
          
              
                    PDFfiller\OAuth2\Client\Provider\SignatureRequest::all();

$list = SignatureRequest::all($provider, ['status' => 'completed']); // in_progress


PDFfiller\OAuth2\Client\Provider\SignatureRequest::certificate();

$s2s = new SignatureRequest($provider, ['id' => 452640]);
$result = $s2s->certificate();