How to implement SSO (single sign-on) in Django + Vuejs?

Question

Django

Now implemented backend - django (user model) + django-rest-framework + django-oauth-toolkit (oauth2) for authorization
Frontend -
vuejs make requests / log in (get a token) on Django.
It would be desirable to make SSO. Because there will already be 3 such "clients" (on different domains). And I want to log in with the help of one, somehow get authorization on others.
Please tell me in which direction to dig and what will have to be redone and what will be the work scheme if you implement SSO, what will have to be rewritten?
Thanks

Answer 1

Maybe this will work? https://github.com/Celeo/Vue-Flask-EVE-SSO