string res = HttpHelper.CreatePostHttpJson("https://api.weixin.qq.com/cgi-bin/user/info/batchget?access_token=" + (token == "" ? Get_Access_Token() : token), tmpSend);

返回的只有这个，昵称也没了，头像也没了，是不是我太久没关注了，这个接口有更新？

{"user_info_list":[{"subscribe":1,"openid":"ouH6ewz4RAk1p51qlVyyhrEiDKAY","nickname":"","sex":0,"language":"zh_CN","city":"","province":"","country":"","headimgurl":"","subscribe_time":1598059829,"remark":"","groupid":0,"tagid_list":[],"subscribe_scene":"ADD_SCENE_QR_CODE","qr_scene":0,"qr_scene_str":""}]}