https://developers.weixin.qq.com/doc/offiaccount/Message_Management/Template_Message_Interface.html

           "touser""OPENID"
           "template_id""ngqIpbwh8bUfcSsECmogfXcV14J0tQlEpBO27izEYtY"
           "url""http://weixin.qq.com/download  
           "miniprogram"
             "appid""xiaochengxuappid12345"
             "pagepath""index?foo=bar"
                     
           "data"
                   "first"
                       "value""恭喜你购买成功！"
                       "color""#173177"
                   
                   "keyword1"
                       "value""巧克力"
                       "color""#173177"
                   
                   "keyword2"
                       "value""39.8元"
                       "color""#173177"
                   
                   "keyword3"
                       "value""2014年9月22日"
                       "color""#173177"
                   
                   "remark"
                       "value""欢迎再次购买！"
                       "color""#173177"
                   
           
       如果不传某一个关键词，例如 "keyword1" "value""巧克力" "color""#173177" 都不传，通知是不显示这一列，还是显示字段名，但值为空。