Gajus\Fuss\SignedRequest::getPayload PHP Method

    public function getPayload()
    {
        return $this->signed_request;
    }

 /**
  * @param Gajus\Fuss\SignedRequest $signed_request
  */
 public function __construct(\Gajus\Fuss\SignedRequest $signed_request)
 {
     $payload = $signed_request->getPayload();
     if (!isset($payload['page'])) {
         throw new Exception\PageTabException('Signed request does not describe page tab.');
     }
     $this->page = $payload['page'];
 }