Hello, I'm using the subscribe method described from (https://supabase.io/docs/reference/javascript/subscribe). Am I allowed to filter on the context of itself based on a column key value? similar like .from("entityName").eq("column",value) ?

What you seem to be asking is last item on that page. Listening to row level changes#

Yea, I've skipped reading last header sorry for bothering 2 AM here. One quick question, I see there are 2 packages on this matter : https://github.com/supabase/realtime and what's already in supabase-js, which one is prefered?

supabase js just uses the realtime api which is what you just linked.

ok I see, thank you!