using System;

using Jose;

using System.Security.Cryptography;

​

public class Program

{

    public static void Main()

    {

        var privateKeyBytes = Convert.FromBase64String(@"MIGTAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBHkwdwIBAQQgEG+HWAY3abyKgAIpdilNirlvECMk4bX4qtQUdsg5f26gCgYIKoZIzj0DAQehRANCAARVNxHLhkXQV8Xrs6RL5/Hapsooer5oZtHImz0Sb01aSNs7u4orCtakxgB3zD5MPwnNpR3Frhhdh/x7e3bqwu5C");

​

        var ecdsa = ECDsa.Create();

        ecdsa.ImportPkcs8PrivateKey(privateKeyBytes, out _);

​

        Jwk key = new Jwk(ecdsa);

​

        Console.WriteLine(key.ToJson().ToString());

    }

}