Use Yii2-user for user registration in Yii2 Rest Api

I want to implement user registration/login process in my project in which i have web client application made in angular and mobile client is on android.

I am using REST for client/server communication. I have installed yii2-user in my yii developed back-end. What I want is to create a rest api in such a way that each of my client application use yii2-user for user registration and login process. So that in client if user want to register the request will be handled by yii-2 user module? Any suggestion that how can I achieve this? Or is there any better way to make REST api for registration and authentication in Yii2?