Get user info with JWT in React - reactjs

Question

I´m storing the user token in the localstorage after a user logs in, and i would like to know how i can use this token that is in the localstorage to fetch the user info.
backend login.js
module.exports.login = async (req, res) => {
const { email, password } = req.body;
try {
const user = await User.findOne({ email: email });
if (!user) return res.status(404).json({ message: "Usuário não cadastrado!" });
const isMatch = bcrypt.compare(password, user.password);
if (!isMatch) return res.status(400).json({ message: "Email e/ou senha incorretos." });
const token = tokenGenereator(user._id);
return res.status(200).json({ result: user, token });
} catch (error) {
console.log(error)
}
};
frontend login.js
export const login = (data, history) => {
return async (dispatch) => {
try {
const userData = await api.login(data);
localStorage.setItem("userToken", JSON.stringify(userData.data.token));
dispatch(
setUser({
fullname: userData.data.fullname,
email: userData.data.email,
isAuth: true,
})
);
history.push("/home");
} catch (error) {
if (error.response && error.response.data.message) {
dispatch(
setNotification({
variant: "danger",
message: error.response.data.message,
})
);
}
}
};
};
I pass the token to the backend
// i would pass the jwt to the function as a parameter
export const fetchUser = (data) => {
return async (dispatch) => {
const user = await api.getUserData(data);
console.log(user);
};
};
And i recieve
module.exports.getCurrentUser = async (req, res) => {
const { token } = req.body;
// i dont know what to do from here...
};