public function getData()
{
$this->validate();
$result = $this->getResult();
if (substr($result, 0, 3) == '{\\"') {
$result = stripslashes($result);
}
$response = json_decode($result, true);
$data = $response[$this->key];
$data['sign'] = $response['sign'];
$data['sign_type'] = $response['sign_type'];
return $data;
}