如何从访问令牌请求插入数据？

如何解决如何从访问令牌请求插入数据？

我的客户发送了这样的网址；

https://accounts.zoho.com/oauth/v2/token?refresh_token={refreshToken}&client_id={client_id}&client_secret={client_secret}&grant_type=refresh_token

我想根据这个写一个插入代码。我的代码在下面，但我不确定这段代码是否正确。我没有找到任何关于从访问令牌请求发送到数据的文档。

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://accounts.zoho.com/oauth/v2/token?refresh_token={refreshToken}&client_id={client_id}&client_secret={client_secret}&grant_type=refresh_token");
        request.Method = "POST";
        JObject requestBody = new JObject();
        JArray recordArray = new JArray();
        JObject recordobject = new JObject();

        recordobject.Add("First_Name",contactData.FirstName);
        recordobject.Add("Mobile",contactData.PhoneNumber);
        recordobject.Add("Email",contactData.Email);
        recordobject.Add("Kategori",contactData.MessageType);
        recordobject.Add("Konu",contactData.Subject);
        recordobject.Add("Last_Name",contactData.LastName);
        recordobject.Add("Company",contactData.CompanyName);
        recordobject.Add("Sirketiniz_ile_ilgili_ozet",contactData.CompanySummary);

        recordArray.Add(recordobject);
        requestBody.Add("data",recordArray);

        string dataString = requestBody.ToString();
        var data = Encoding.UTF8.GetBytes(dataString);
        int dataLength = data.Length;
        request.ContentLength = dataLength;
        using (var writer = request.GetRequestStream())
        {
            writer.Write(data,dataLength);
        }
        request.KeepAlive = true;
        HttpWebResponse response;
        try
        {
            response = (HttpWebResponse)request.GetResponse();
        }
        catch (WebException e)
        {
            if (e.Response == null) { throw; }
            response = (HttpWebResponse)e.Response;
        }

        HttpWebResponse responseEntity = response;
        Console.WriteLine("HTTP Status Code : " + (int)response.StatusCode);
        string responsestring = new StreamReader(responseEntity.GetResponseStream()).ReadToEnd();
        responseEntity.Close();
        Console.WriteLine(responsestring);