ValidateJWT.cs

using Microsoft.IdentityModel.Tokens;
using Microsoft.IdentityModel.Protocols.OpenIdConnect;
using Microsoft.IdentityModel.JsonWebTokens;
using Microsoft.IdentityModel.Protocols;

// See https://aka.ms/new-console-template for more information
var token = Console.ReadLine();

var configManager = new ConfigurationManager<OpenIdConnectConfiguration>("https://login.microsoftonline.com/69191dcf-9be5-47ba-9010-b356d335a6e4/v2.0/.well-known/openid-configuration", new OpenIdConnectConfigurationRetriever());

var parameters = new TokenValidationParameters()
{
    ConfigurationManager = configManager,
    ValidAudience = "76a28491-ce24-459b-937a-a61de673c1ca"
};
var handler = new JsonWebTokenHandler();

try
{
    var result = handler.ValidateToken(token, parameters);
    Console.WriteLine(result.IsValid);
    foreach (var claim in result.Claims)
    {
        System.Console.WriteLine($"{claim.Key}: {claim.Value}");
    }
}
catch (SecurityTokenException e)
{
    System.Console.WriteLine(e.Message);
    throw;
}