Firebase - how to track conversions from Facebook, App Store, etc?

[ja...@founders.as]

Hi guys, 

I was wondering if it's possible to track conversion form facebook, app store, etc. within firebase? 

When I'm looking at source/medium of my conversions, I only see "google related" conversions. But I would like to track if other activities (facebook, app store ads, etc) lead to app installs or in-app events.

At the moment I can only guess what the "(non set)" and "(direct)" means.