public function templateContent() {
        $payload = array(
            'cid' => $this->cid
        );
        $apiCall = 'campaigns/template-content';
        $data = $this->requestMonkey($apiCall, $payload);
        $data = json_decode($data, true);
        if (isset($data['error']))
            throw new MailchimpAPIException($data);
        else
            return isset($data) ? $data : false;
    }