using System;

using JWT;

using JWT.Algorithms;

using JWT.Serializers;

public class Program

{

public static void Main()

{

var payload=new{ usr="appsupport",

mno="9137312346",

hsk="gPmAN0EzckaF0g0KDISQnw",

iat=(int)(DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalSeconds};

string secret = "GQDstcKsx0NHjPOuXOYg5MbeJ1XT0uFiwDVvVBrk";

IJwtAlgorithm algorithm = new HMACSHA256Algorithm(); // symmetric

IJsonSerializer serializer = new JsonNetSerializer();

IBase64UrlEncoder urlEncoder = new JwtBase64UrlEncoder();

IJwtEncoder encoder = new JwtEncoder(algorithm, serializer, urlEncoder);

var token = encoder.Encode(payload, secret);

Console.WriteLine(token);

}

}