Docusign 400 BadRequest for AddUser to account REST API

Question

I managed to get access token with my code,

  private async Task<string> GetAccessToken()
    {
        string refreshToken = string.Empty;
        string accessToken = string.Empty;

        HttpClient client = new HttpClient();

        client.BaseAddress = new Uri("https://demo.docusign.net/restapi/v2/oauth2/token");

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

        string body =
            "username=user%40company.net&password=mypassword&client_id=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxc&grant_type=password&scope=api";               

        HttpContent content = new System.Net.Http.StringContent(body, Encoding.UTF8, "application/x-www-form-urlencoded");

        HttpResponseMessage messge = await client.PostAsync("https://demo.docusign.net/restapi/v2/oauth2/token", content);
        //string description = string.Empty;
        if (messge.IsSuccessStatusCode)
        {
            string result = messge.Content.ReadAsStringAsync().Result;

            dynamic returnObj = JsonConvert.DeserializeObject(result);

            var scope = returnObj.scope.Value;
            accessToken = returnObj.access_token.Value;

        }

        return accessToken;
    }

This gives me the access token, Now I am trying to use that token and add a user to the account,

    private async Task<string> AddUser(string accessToken, string usersBaseUri)
    {
        usersBaseUri = "https://demo.docusign.net/restapi/v2/accounts/<myaccountId>/users";
        string resultStr = string.Empty;

        HttpClient client = new HttpClient();

        client.BaseAddress = new Uri(usersBaseUri);
        client.DefaultRequestHeaders.Accept.Add(
        new MediaTypeWithQualityHeaderValue("application/json"));
        client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", accessToken);           


        DocuSignUser user = new DocuSignUser();
        user.Email = "user2@company.net";
        user.UserName = "user2@company.net";
        user.FirstName = "user2";
        user.LastName = "dev";

        var json = JsonConvert.SerializeObject(user);
        HttpContent content = new System.Net.Http.StringContent(json, Encoding.UTF8, "application/json");

        HttpResponseMessage messge = await client.PostAsync(usersBaseUri, content);
        //string description = string.Empty;
        if (messge.IsSuccessStatusCode)
        {
            string result = messge.Content.ReadAsStringAsync().Result;

            dynamic returnObj = JsonConvert.DeserializeObject(result);

            var scope = returnObj.scope.Value;
            accessToken = returnObj.access_token.Value;
        }

        return resultStr;
    }

Here is the Docusign User class I use to serialize,

public class DocuSignUser
{
    [JsonProperty("email")]
    public string Email { get; set; }

    [JsonProperty("userName")]
    public string UserName { get; set; }

    [JsonProperty("firstName")]
    public string FirstName { get; set; }

    [JsonProperty("lastName")]
    public string LastName { get; set; }

}

User api is not supported in the .Net SDK. Therefor I had to write this code by referring to Docusign Api test playground and checking the Request/Response with Fiddler.

Appreciate any help on this.

EDIT

Here is the POST request

POST https://demo.docusign.net/restapi/v2/accounts/156xxxx/users HTTP/1.1
Accept: application/json
Authorization: Bearer *******<AccessToken>
Content-Type: application/json; charset=utf-8
Host: demo.docusign.net
Content-Length: 100
Expect: 100-continue
    {"email":"user1@company.net","userName":"user1@company.net","firstName":"Sam1","lastName":"Cooper1"}

Answer 1

Found the answer,

Issue was with the Json message. Required Json format is in the following format as per Api Guide

{
  "newUsers":[
     {         
        "email":"user@company.net",         
        "firstName":"name1",         
        "lastName":"lastname1",
        "password":"Password01",         
        "userName":"user1@bcompany.net"         
     }
   ]
}