{
	"welcome_code": "CALLBACK_CODE",
	"text": {
		"content": "文本消息内容"
	},
	"attachments": [{
        "msgtype": "image",
        "image": {
            "media_id": "MEDIA_ID",
            "pic_url": "http://p.qpic.cn/pic_wework/3474110808/7a6344sdadfwehe42060/0"
        }
    }, {
        "msgtype": "link",
        "link": {
            "title": "消息标题",
            "picurl": "https://example.pic.com/path",
            "desc": "消息描述",
            "url": "https://example.link.com/path"
        }
    }, {
        "msgtype": "miniprogram",
        "miniprogram": {
            "title": "消息标题",
            "pic_media_id": "MEDIA_ID",
            "appid": "wx8bd80126147dfAAA",
            "page": "/path/index.html"
        }
    }, {
        "msgtype": "video",
        "video": {
            "media_id": "MEDIA_ID"
        }
    },{
		"msgtype":"file",
		"file":
		{
			"media_id":"MEDIA_ID"
		}
	}]
}

{
    "errcode": 0,
    "errmsg": "ok",
}