Is it possible to subscribe to an entire Lemmy instance?
I found the https://waveform.social/ instance while browsing for synthesizers communities, and the entire instance seems interesting to me and I'd like any content posted to that instance's local to appear in my subscribed list.
I don't think you can, but you could look at that instance's community list and subscribe to all of them. Any content posted there will have to be posted in one of those communities, anyhow.