public function addTag(array $data)
    {
        try {
            $response = Requests::post(
                $this->getConstant('SFAPI_URL') . '/tags/add',
                $this->headers,
                array('data' => json_encode($data)),
                array('timeout' => $this->timeout)
            );
            $response_data = json_decode($response->body);

            return $response_data;
        } catch (Exception $e) {
            return $this->exceptionHandling($e);
        }
    }