API：https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=ACCESS_TOKEN

接口调用示例：

{
    "touser":"OPENID",
    "msgtype":"miniprogrampage",
    "miniprogrampage":
    {
        "title":"title",
        "appid":"appid",
        "pagepath":"pagepath",
        "thumb_media_id":"thumb_media_id"
    }
}