POST users import v2 internal server error - autodesk-forge

Question

I am working on a fully automatic pipeline for my company where we automatically set up projects, add users and upload files with the different APIs on BIM360. On the stage of adding a user I get a 500 internal server error:
{"code":2000,"message":"no implicit conversion of String into Integer"}
We are using a two-legged authentication approach and as such the header looks like this:
Authorization: Bearer <token> (It has account:write rights)
x-user-id: ************ (uid of my admin account)
Content-Type: application/json
The request content is this:
#"{
""email"": """ + ***#********.** + #""",
""services"": {
""document_management"": {
""access_level"": """ + admin+ #"""
},
""project_administration"": {
""access_level"": """ + admin+ #"""
}
},
""industry_roles"": []}";
I just can't quite seem to figure out what I am doing wrong. Hope someone can help me.
EDIT: Full code for this request
public async static Task<HttpStatusCode> AddUserToProjectEmail(string projectId, string accountId, string accessToken, string userToAddEmail, string userPrivilege, string adminUserId)
{
using (HttpClient httpClient = new HttpClient())
{
using (HttpRequestMessage request = new HttpRequestMessage())
{
//Documentation for what to put in the Http POST: https://forge.autodesk.com/en/docs/bim360/v1/reference/http/projects-project_id-users-import-POST/
request.Method = new HttpMethod("POST");
request.RequestUri = new Uri("https://developer.api.autodesk.com/hq/v2/regions/eu/accounts/" + accountId + "/projects/" + projectId + "/users/import");
//Make the request payload
string jsonPayload = AddPayloadToUserAddEmail(userToAddEmail, userPrivilege);
request.Content = new StringContent(jsonPayload);
request.Content.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json");
request.Headers.Add("x-user-id", adminUserId);
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
//Send request
var response = await httpClient.SendAsync(request);
return response.StatusCode;
}
}
}
And the request payload method:
private static string AddPayloadToUserAddEmail(string userToAddEmail, string userPrivilege)
{
string payload = #"{
""email"": """ + userToAddEmail + #""",
""services"": {
""project_administration"": {
""access_level"": """ + userPrivilege + #"""
},
""document_management"": {
""access_level"": """ + userPrivilege + #"""
}
},
""industry_roles"": []
}";
return payload;
}
I have checked all the IDs through the URL on BIM360, however it's not possible to check the Uid of my account I think.
EDIT 2: I should note that I was getting a different error before I added the x-user-id header, where it just said forbidden which makes sense. This lead me to think it had something to do with the x-user-id header, but I can't figure it out.

Answer 1

Don't be like me and forget to wrap the payload into an array as stated on the docs that it has to be. Using this as payload worked
#"[{
""email"": """ + userToAddEmail + #""",
""services"": {
""project_administration"": {
""access_level"": """ + userPrivilege + #"""
},
""document_management"": {
""access_level"": """ + userPrivilege + #"""
}
},
""industry_roles"": []
}]";