JWT Auth always declares member as default membership

I been using jwt auth that get from rest api from my wordpress to authorise user from username and password but the authorise token send not declare any member on it

the jwt auth already get the user but the user is declare as default membership even if the user has premium membership on it.

For your info on the wordpress the membership work fine when user login. But i am creating mobile apps using ionic and get the content from wordpress to my mobile app using rest api.
I am able to login the user from my mobile app using jwt auth and get the user from wordpress but the user is not get their membership type and become as guest membership.
So, I need help on how i can solve this issue.