请求json

{
    "touser":"oM7DRwPIMJOgz6qJSwVK9wJs5CJo",
    "msgtype":"mpnews",
    "mpnews":
    {
         "media_id":"lI6D__NYxR0Hz4OQxN_u3VYdYx6EKq2GGjtiGY1J7ig"
    }
}

返回值 {"errcode":-1,"errmsg":"system error rid: 60debb7e-1e4c8a00-1f1ba73e"}