Verify Google Id Token: FormatException

/// <summary>
///   Handler for verifying Google ID tokens.
/// </summary>
public class VerifyGoogleIdTokenHandler(IConfiguration configuration)
    : IRequestHandler<VerifyGoogleIdTokenCommand, Result<GoogleJsonWebSignature.Payload>>
{
    private readonly GoogleJsonWebSignature.ValidationSettings _settings = new()
    {
        Audience = new[]
        {
            configuration[ConfigurationKeys.GoogleWebClientId], configuration[ConfigurationKeys.GoogleAndroidClientId]
        }
    };

    public async Task<Result<GoogleJsonWebSignature.Payload>> Handle(VerifyGoogleIdTokenCommand request,
        CancellationToken cancellationToken)
    {
        try
        {
            var payload = await GoogleJsonWebSignature.ValidateAsync(request.IdToken, _settings);
            if (payload == null)
                throw new InvalidJwtException("Invalid ID token");

            return Result<GoogleJsonWebSignature.Payload>.Success(payload);
        }
        catch (Exception ex)
        {
            return Result<GoogleJsonWebSignature.Payload>.Failure("Invalid ID token", new[] { ex.ToString() }, 400);
        }
    }
}