To authenticate the user and communicate with the server, you need the user’s access token. You can obtain the user’s access token by calling the getAccessTokenSilently method on the furo object. 
const jwtAccessToken = await furo.getAccessTokenSilently();
If the user is logged in, a valid token will always be returned. If the user is not logged in, null is returned. For methods to verify the user’s token and more detailed information about the token, refer to here.