https://developers.weixin.qq.com/minigame/dev/wxcloudrun/src/development/pay/order/unified.html

参数如下

{"body":"xxxx","out_trade_no":"0bd5fefe6xxxxxxxx01a614a","sub_mch_id":"xxxx","total_fee":1,"openid":"xxxx","spbill_create_ip":"xxxxx","env_id":"test-xxxxxxxx","callback_type":2,"container":{"service":"hxxxxxx-141","path":"/wx/pay/callback"}}

xxxxxx 为示意