设置授权页字段信息
        详情请参考
        https://mp.weixin.qq.com/wiki?id=mp1497082828_r1cI2

        :param user_field: 授权页个人发票字段
        :type user_field: dict
        :param biz_field: 授权页单位发票字段
        :type biz_field: dict

def set_auth_field(self, user_field, biz_field):
        """
        设置授权页字段信息
        详情请参考
        https://mp.weixin.qq.com/wiki?id=mp1497082828_r1cI2

        :param user_field: 授权页个人发票字段
        :type user_field: dict
        :param biz_field: 授权页单位发票字段
        :type biz_field: dict
        """
        return self._post(
            'setbizattr',
            params={
                'action': 'set_auth_field',
            },
            data={
                'auth_field': {
                    'user_field': user_field,
                    'biz_field': biz_field,
                },
            },
        )