{ errcode: 90011, errmsg: '[pay_sig] pay_sig is invalid traceid: 33616344, raw post_body(remove wrapped []): [{"offer_id":"1450053023","openid":"okj8p5Lw0Fby5gZgxSUbHv-SgDLA ","ts":1685602660,"zone_id":"1","env":1}], base64_encoded_post_body: eyJvZmZlcl9pZCI6IjE0NTAwNTMwMjMiLCJvcGVuaWQiOiJva2o4cDVMdzBGYnk1Z1pneFNVYkh2LVNnRExBIiwi dHMiOjE2ODU2MDI2NjAsInpvbmVfaWQiOiIxIiwiZW52IjoxfQ== rid: 64784164-74a87c3b-11a06b5f' } 我检查了一下我post_body是一致的，以下是我签名的js代码   let stringSignTemp = `/wxa/game/getbalance&${JSON.stringify(sendObj)}`         const sig = crypto.createHmac('sha256', appKey).update(stringSignTemp, 'utf8').digest('hex');