def subscribe_notice(self, access_token):
        """doc: http://open.youku.com/docs/doc?id=31
        """
        url = 'https://openapi.youku.com/v2/users/subscribe/notice.json'
        params = {
            'client_id': self.client_id,
            'access_token': access_token
        }
        r = requests.get(url, params=params)
        check_error(r)
        return r.json()
doc: http://open.youku.com/docs/doc?id=31