UpdateWsUserResponse

批量更新响应：data 是失败条目数组。成功时为空数组 []；调用方检查 len(data)==0 判断全成功

{
    "code": 200,
    "message": "success",
    "data": [
        {
            "open_id": "string",
            "ws_username": "string",
            "ext_info": {},
            "failed_type": "open_id_not_found"
        }
    ]
}