docs: def create(self, identity_id, service, token):
          """ Create the token
  
              :param identity_id: The ID of the identity to retrieve
              :param service: The service that the token is linked to
              :param token: The token provided by the the service
              :param expires_at: Set an expiry for this token
              :return: dict of REST API output with headers attached
              :rtype: :class:`~datasift.request.DictResponse`
              :raises: :class:`~datasift.exceptions.DataSiftApiException`,
                  :class:`requests.exceptions.HTTPError`
          """
  
          params = {'service': service, 'token': token}
  
          return self.request.post(str(identity_id) + '/token', params)