Multi-line Android Push Notification

I am using ngCordova for push notifications and the GCM service to send messages. Everything works fine except my messages are concatenated and span only one line.

I get many multi-line messages so I guess this is somehow possible.

Anyone knows how to implement it?

I have also found this link describing how to do it for native apps:

http://tips.androidhive.info/2015/04/android-showing-push-notification-in-multiline/