Can't get currentUser with Ember simple auth

Ember Data
5

The route that’s sends the token is /token and I thought you need to have a additional route /users/me to receive the currentUser, that what atleast I got from the ESA-Guide. Now, I have the /token route that sends the user-id.

router.post('/token', asyncHandler(async (req, res, next) => {
    if (req.body.grant_type === 'password') {
        try {
            const { username, password } = req.body;
            await User.find({ email: username }, async (err, docs) => {
                if (docs.length !== 0) {
                    if (docs[0].password === password) {
                        res.status(200).send(`{ "access_token": "${docs[0]._id}"}`);
                        next();
                    } else {
                        bcrypt.compare(password, docs[0].password, (error, val) => {
                            if (error) {
                                next(error);
                            }
                            if (val) {
                                res.status(200).send(`{ "access_token": "${docs[0]._id}" }`);
                                next();
                            } else {
                                res.status(400).send('{"error": "invalid_grant"}');
                                next();
                            }
                        });
                    }
                } else {
                    res.status(400).send('{"error": "invalid_grant"}');
                    next();
                }
            });
        } catch (error) {
            next(error);
        }
    } else {
        res.status(400).send('{ "error": "unsupported_grant_type" }');
    }
}));

Could it be that this was how it suppose to be in the first place ?