How to decrypt Adminjs cookie

[Paroca72]

I'm trying to decrypt the adminjs cookie without success.
I'm using cookie-parser as read around the web.

app.js

    // cookieParser middleware
    app.use(cookieParser(process.env.ADMINJS_COOKIE_PASSWORD));

middleware

const AuthenticationMiddleware = {
    needToBeAuthenticated: (req, res, next) => {
        // Check if exists in session the cookie of AdminJS
        console.log('Decrypted cookies: ', req.signedCookies)
        console.log('Decrypted cookies: ', req.cookies)
        next();
    },
};

export default AuthenticationMiddleware;

What I see is:
arg1: {adminjs: 'x8Y8-ds1kHKG7iB1CT4wau7ZdvTQ2gvS'}

Actually to me is not seems decripted.
My goal is understand inside a generic middleware if the the user is authenticated using Adminjs.

Thanks

[Paroca72]

Its already decrypt