using System;
using System.Threading.Tasks;
using RestSharp;

namespace n4_whatsapi
{
    class Program
    {
        static void Main(string[] args)
        {
            Program.SendMessage().Wait();
        }

        private static async Task SendMessage()
        {
            var whatsapiURL = "https://whatsapi.nube4.cloud/whatsapi/msg";
            var client = new RestClient(whatsapiURL);

            var request = new RestRequest(whatsapiURL, Method.Post);
            request.AddBody("{\"instanceid\":\"instance14116\", \"token\":\"r3gkujuqh8erl340\", \"to\":\"+50258797957\", \"msg\":\"este es un mensaje de prueba c#\"}");

            RestResponse reponse = await client.ExecuteAsync(request);
            var output = reponse.Content;
            Console.WriteLine(output);
        }
    }
}