You’ll need to look into the plugin packaging system. There is functionality to build packages for different platforms.
The basic approach gives you parallel content folders.
This is all a fairly major technical complication - eased a little if you are on a single platform so make sure you really want to do it before starting on it.
Android may have some platform specific content distribution system, if you can leverage that (especially if linked to their purchasing options) you will save yourself some headaches over using a third party system. My distribution model needed to be platform agnostic and completely in my control hence biting the bullet on Amazon s3 integration, which likely added 3 weeks development time spread across file caching systems, signing the http request, and other fun. You’ll want to allow a decent amount of time just for the unreal packaging side of things too.