Seriyi Günceller

var client = new RestClient("https://apitest.nilvera.com/eproducer/Series");
client.Timeout = -1;
var request = new RestRequest(Method.PUT);
request.AddHeader("Authorization", "Bearer <API KEY>");
request.AddHeader("Content-Type", "application/json");
var body = @"{"ID": 0,
"IsDefault": true,
"IsActive": true}";
request.AddParameter("application/json", body,  ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
Console.WriteLine(response.Content);