public static void Main(string[] args) { // Find your Account SID and Auth Token at twilio.com/console const string accountSid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; const string authToken = "your_auth_token"; const string serviceSid = "ISXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; TwilioClient.Init(accountSid, authToken); UserResource user = UserResource.create( identity: "User0001", segment: new List <string> { "premium", "fitness-lifestyle" }); Console.WriteLine(user.Sid); }