200即是收到。GET回调 Content-Type: application/x-www-form-urlencodedt + tradeNo + currency + amount + status + code + message1728641570974payout_zsg7EbJzqOa1LfqEa8uEUSD12.342succeededsucceededSHA256算法加密签名字符串,例如加密第2步准备的字符串后的字符串为:618adc65704c596fe5afeb918d100cb436703488815013f53878e30929e1643d