using System;

using System.Text;

using Microsoft.IdentityModel.Tokens;

using System.IdentityModel.Tokens.Jwt;

using System.Security.Claims;

public class Program

{

    public static void Main()

    {

        var jwtToken = new JwtSecurityToken(

            "poseidon",

            null,

            claims: new Claim[] {new Claim(JwtRegisteredClaimNames.Sub, "datasync"), new Claim(JwtRegisteredClaimNames.Iat, DateTimeOffset.UtcNow.ToUnixTimeSeconds().ToString()), new Claim("env", "dev")},

            expires: DateTime.Now.AddMinutes(10),

            signingCredentials: new SigningCredentials(new SymmetricSecurityKey(Encoding.ASCII.GetBytes("12345678901234567890123456789012")), SecurityAlgorithms.HmacSha256));

        var accessToken = new JwtSecurityTokenHandler().WriteToken(jwtToken);

​

        Console.WriteLine(accessToken);

    }

}