User management service - 33% completed

I have been working on the backend exclusively. I am using Go for the monolith backend and Sqlite as datastore.
The first module I want to complete is User managements system involving registration, login and logout endpoints. As of this weekend, the registration endpoints are wrapped up.
Anyone curious, the user identity system is built on oauth with JWT for managing access and refresh tokens.
Will be tackling user logout and login piece next.