DotNetCore.SKIT.FlurlHttpClient.Wechat/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/CardInvoice/CardInvoiceSetPayMerchantRequest.json

{
    "paymch_info": {
        "mchid": "1234",
        "s_pappid": "wxabcd"
    }
}