完整请求参数
{
"pid": "1000",
"type": "wxpay",
"out_trade_no": "TEST20260801205214955",
"notify_url": "https://iwkdemo.fun/notify.php?case=TEST20260801205214955",
"return_url": "https://iwkdemo.fun/return.php?case=TEST20260801205214955",
"name": "易支付V1测试订单",
"money": "0.01",
"clientip": "216.73.216.191",
"device": "pc",
"param": "from-epay-v1-tester",
"sign_type": "MD5",
"sign": "567c322cdb711e2880436026bc030b4f"
}