Youtube notifications for Linux?

Until recently I was using Chromium due to a problem with Firefox but then I found a way to fix Firefox and went back to it. However, there’s one extension I miss from Chromium and which is available only for Chromium - “Notifications for youtube”. Since there’s no such an extension for Firefox (there is one but it’s written in Klingon and I don’ speak that language), I was hoping that there might be an application for Linux that runs in the background and shows notifications on the desktop when any of the channels you have subscribed for uploads a new video. Do you know of any app for Linux which can do that? It’s OK to be just CLI as well.

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