"Touch to download SoundCloud" notification I have Samsung Galaxy S3, Android 4.3. Not rooted.

From time to time, I get notification: "Touch to download SoundCloud"



I did had Soundcloud installed application before, but I have uninstalled it and I am still getting this notification. When I tap it, nothing happens.

Does anyone know what this notification is or how can I identify which process is spawning notification?

Edit:

I have found that process that is raising this notification is Firefox. Every time I start Firefox on the phone I get this notification. The question is, how to stop this notification  from displaying when I start Firefox?
You can identify the app responsible by long-tapping the notification and clicking "App info" on the pop-up menu.