I'm new to JSS, I need to use JSS Layout service to send personalized content to a Mobile App([API-Only Mode](https://jss.sitecore.com/docs/fundamentals/application-modes#api-only-mode)).

From Jss Documentation

> 
> **Via Layout Service**
> 
> 
> Layout Service requests are tracked on the server-side as a 'page
>  view' just like a traditional Sitecore site would. This includes any
>  goals, events, etc configured to be triggered by the route item.
>  Because Sitecore's session tracking is cookie-based, it is important
>  to pass browser cookies to Layout Service requests (this is done by
>  default).
> 
> 
> 

Since the requests are not from a browser but from a mobile app, how to make the tracking work while requesting the layout service.