Arabic Characters

Below is my payload, the name is Arabic when I send it with HTTP client I'm getting unauthorized. When the name is in English, same body work fine. Why? Can somebody tell me how to solve it.

{"groupId":"0000000000000","entityType":"ORGANISATION","caseId":"ORG-00000800","providerTypes":["CLIENT_WATCHLIST","WATCHLIST"],"caseScreeningState":{"WATCHLIST":"ONGOING"},"name":"الشركة تكون","nameTransposition":false,"secondaryFields":[{"typeId":"SFCT_6","value":"BEL"}],"customFields":[]}

Code.

public string WorldCheckPostData(string data, string firstPart, string firstValue = null, string secondPart = null, string secondValue = null)

{

HttpResponseMessage response = null;

string urlSecondPart = CreateNewString(firstPart, firstValue, secondPart, secondValue);

Uri uri = new Uri($"{_baseUrl}{urlSecondPart}");

try

{

using (var client = new HttpClient())

{

HttpMethod httpMethod = HttpMethod.Post;

Encoding encoding = Encoding.UTF8;

HttpRequestMessage httpRequest = GenerateHTTPRequest(uri, httpMethod, data);

//httpRequest.Content = new StringContent(data, encoding, _contentType);

httpRequest.Content = new StringContent(data, encoding, _contentType);

httpRequest.Content.Headers.ContentType = MediaTypeHeaderValue.Parse(_contentType);

response = client.SendAsync(httpRequest).GetAwaiter().GetResult();

if (!response.IsSuccessStatusCode)

{

var message = response.Content.ReadAsStringAsync().GetAwaiter().GetResult();

throw new Exception($"World Check POST method field with exception: { message }");

}

httpRequest.Dispose();

}

}

catch (Exception)

{

throw;

}

return response.Content.ReadAsStringAsync().GetAwaiter().GetResult();

}