jwt+rsa+dotnet with pem

gistfile1.txt

using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Security.Cryptography;
using Newtonsoft.Json;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.OpenSsl;
using Org.BouncyCastle.Security;

namespace jwt
{
    class Program
    {
        private const string PrivateKey = @"-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
";

        private const string PublicKey = @"-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6OOvYVVd4vq4Q2K1SPOZ
9IBe36QDAqrMK5e0DkmJlhy9Y29EWfRlhEzt5+2IJU+SuKQojoNY3U2p4BA7KYbv
H2DwCuxtTUXjP44fych3qtfMmnoMwPzmgK1afYcTs/cM4JtYtdpEGSTst1mRH+Al
s8W2qc9MH2SFeQe3H/SmSF8KBrfOzDtAHCRG0+vPTJcCFdmsyQfSLigwFsUULWkx
NdtGp7i7z/cMdJ1fq/dHDaB34EEz4ye7B/XeQlj0jlO5cOUco22Kne29Wp3vXQUb
KHRGD8mXMBGBoBVOFxx8aKoXqoImQkLwOM55uhreOaEJDfjHnThonxyJguMmY2Kf
kwIDAQAB
-----END PUBLIC KEY-----
";
        static void Main(string[] args)
        {
            var claims = new Dictionary<string, object>
            {
                {"sub", "1234567890"},
                {"name", "John Doe"},
                {"admin", true},
            };
            var jwt = GetJwt(claims, PrivateKey);
            Debug.WriteLine("===JWT===");
            Debug.WriteLine(jwt);
            Debug.WriteLine("");
            var claims2 = GetClaims(jwt, PublicKey);
            Debug.WriteLine("===CLAIMS2===");
            Debug.WriteLine(JsonConvert.SerializeObject(claims2));
            Debug.WriteLine("");            
        }

        static string GetJwt(Dictionary<string, object> claims, string privateKey)
        {                        
            using (var rsa = GetRSACryptoServiceProvider(privateKey,true))
            {            
                var jwt = Jose.JWT.Encode(claims, rsa, Jose.JwsAlgorithm.RS256);
                return jwt;                
            }            
        }

        static RSACryptoServiceProvider GetRSACryptoServiceProvider(string key, bool isPrivate)
        {                        
            var rsaParams = GetRsaParams(key, isPrivate);
            var rsa = new RSACryptoServiceProvider();
            rsa.ImportParameters(rsaParams);
            return rsa;
        }

        static RSAParameters GetRsaParams(string key, bool isPrivate)
        {
            if (isPrivate)
            {
                AsymmetricCipherKeyPair keyPair;
                using (var sr = new StringReader(key))
                {
                    PemReader pr = new PemReader(sr);
                    keyPair = (AsymmetricCipherKeyPair) pr.ReadObject();
                }
                return DotNetUtilities.ToRSAParameters((RsaPrivateCrtKeyParameters) keyPair.Private);
            }
            AsymmetricKeyParameter keyParam;
            using (var sr = new StringReader(key))
            {
                PemReader pr = new PemReader(sr);
                keyParam = (AsymmetricKeyParameter)pr.ReadObject();
            }
            return DotNetUtilities.ToRSAParameters((RsaKeyParameters)keyParam);
        }
                
        static Dictionary<string, object> GetClaims(string jwt, string publicKey)
        {            
            using (var rsa = GetRSACryptoServiceProvider(publicKey, false))
            {
                var payload = Jose.JWT.Decode<Dictionary<string, object>>(jwt, rsa);
                return payload;
            }
        }
    }
}

Getting error in line Debug.WriteLine(JsonConvert.SerializeObject(claims2));
"Input string not in proper format...."