URL:

https://api.weixin.qq.com/cgi-bin/message/wxopen/template/uniform_send?access_token=XXX

Body:

{

    "touser": "XXX",

    "template_id": "XXX",

    "data": {

        "character_string1": {

            "value": "WX201910180001"

        },

        "amount4": {

            "value": "￥199.00"

        }

    }

}