public function isValidVerifyTokenRequest()
    {
        if ($this->getRequest()->getMethod() !== 'GET') {
            return false;
        }

        $params = $this->getRequest()->getQueryParams();

        if (!isset($params['hub_verify_token'])) {
            return false;
        }

        return  $params['hub_verify_token'] === $this->verifyToken;
    }