def METHOD_NAME(self):
    request_body = {
        'user_id': self.moderator.id
    }
    headers = self.add_authorization_header(username='contributor')
    self.app_post_json(
        self._prefix, request_body, status=200, headers=headers)
    self.assertTrue(
        self.is_following(self.moderator.id, self.contributor.id))