nginx-proxy-manager/backend/lib/express/jwt-decode.js

const Access = require('../access');

module.exports = () => {
    return function (req, res, next) {
        res.locals.access = null;
        let access        = new Access(res.locals.token || null);
        access.load()
            .then(() => {
                res.locals.access = access;
                next();
            })
            .catch(next);
    };
};