Construct JSON and Webhook trigger from Dynamics 365 finance and operations through x++

DMFDefinitionGroupExecution     dmfDefGrpExec;
        DMFDefinitionGroup              dmfDefGrp;

        System.Net.Http.HttpClient httpClient = new System.Net.Http.HttpClient();

        while select forupdate dmfDefGrpExec
            join dmfDefGrp
            where dmfDefGrp.DefinitionGroupName == dmfDefGrpExec.DefinitionGroup
                && dmfDefGrp.TriggerWebHook
        {
            System.IO.StringWriter          stringWriter;
            Newtonsoft.Json.JsonTextWriter  jsonWriter;
 
            stringWriter       = new System.IO.StringWriter();
            jsonWriter         = new Newtonsoft.Json.JsonTextWriter(stringWriter);

            str sJSON = "";
            jsonWriter.WriteStartObject();
            jsonWriter.WritePropertyName("ExecutionId");
            jsonWriter.WriteValue(dmfDefGrpExec.ExecutionId);
            jsonWriter.WriteEndObject();

            sJSON = stringWriter.ToString();

            System.Net.Http.HttpContent content = new System.Net.Http.StringContent(sJSON,
                                                                        System.Text.Encoding::UTF8,
                                                                        "application/json");
            var task = httpClient.PostAsync("https://xxxxxxxxx-functionapp.azurewebsites.net/api/SyncStatus?code=5XBiPd0z_HCZpENuNAUabeXFAu5a-Lg7j_K5MWwOQpahAzFucoyn0w==",content);
            task.Wait();
            System.Net.Http.HttpResponseMessage msg = task.Result;
 
            System.Net.Http.HttpContent ct = msg.Content;
            var result = ct.ReadAsStringAsync();
            result.Wait();
            System.String s = result.Result;

            mapEnumerator   mapEnumerator;
            Map             data;

            data = RetailCommonWebAPI::getMapFromJsonString(s);
            mapEnumerator = data.getEnumerator();
            while (mapEnumerator.moveNext())
            {
                if (mapEnumerator.currentKey() == "message")
                {
                    ttsbegin;
                    dmfDefGrpExec.Status = mapEnumerator.currentValue();
                    dmfDefGrpExec.doUpdate();
                    ttscommit;
                }
            }
        }