I am working with OKTA User API and trying to Create/Update user from .NET Core service. But i am getting "The request body was not well-formed". The below code i used to make API call to OKTA.

public static class ApiHelper

  {

    public static void AddHeaders(HttpRequestHeaders headers, string authType = "", string secret = "")

    {

      headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

      if (!string.IsNullOrWhiteSpace(authType) && !string.IsNullOrWhiteSpace(secret))

      {

        headers.Authorization = new AuthenticationHeaderValue(authType, secret);

      }

    }

    public static async Task<T> GetAsync<T>(string url, string authType = "", string secret = "")

    {

      using (var client = new HttpClient())

      {

        var request = new HttpRequestMessage

        {

          Method = HttpMethod.Get,

          RequestUri = new Uri(url)

        };

        AddHeaders(request.Headers, authType, secret);

        var response = await client.SendAsync(request);

        var result = response.Content.ReadAsStringAsync().Result;

        return JsonConvert.DeserializeObject<T>(result);

      }

    }

    public static async Task<TResult> PostAsync<TResult, TResponse>(string url, TResponse data, string authType = "", string secret = "")

    {

      using (var client = new HttpClient())

      {

        var request = new HttpRequestMessage

        {

          Method = HttpMethod.Post,

          RequestUri = new Uri(url)

        };

        AddHeaders(request.Headers, authType, secret);

        request.Content = new JsonContent(data);

        var response = await client.SendAsync(request);

        var result = response.Content.ReadAsStringAsync().Result;

        return JsonConvert.DeserializeObject<TResult>(result);

      }

    }

  }

  public class JsonContent : StringContent

  {

    public JsonContent(object payload) :

      base( JsonConvert.SerializeObject(payload), Encoding.Unicode, "application/json")

    {

    }

  }

Note: Get data from OKTA is working, but POST data to OKTA is not working.

POST URL - https://<companyapp>.oktapreview.com/api/v1/users?activate=true

JSON: {

"id": null,

"status": null,

 "profile": {

  "firstName": "demo",

  "lastName": "user",

  "email": "demo.user@company.com",

  "login": "demo.user@company.com",

  "department": "Art",

  "mobilePhone": "1111111111"

 }

}

I tried in POSTMAN the same data is working. It is not working in .NET Core. Please look into this and provide a fix/workaround asap.