YouTube: hide liked videos and subscriptions

Trabla: YouTube: hide liked videos and subscriptions ( make private )

Solving:

1. Log In into your YouTube Account

2. Left general menu - select "My Channel"

3. Click on "Channel Settings" button

4. In "Channel Settings" dialog:

 - Enable "Keep all my liked videos  and saved playlists private"

 - Enable "Keep all my subscriptions private"

 - Click "Save" button

5. Result