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anybody have any recommendations for how to run a webhook when a certain row is changed in the database?

There is an example in the javascript api on using realtime on a single row (or at least single if you can generate a query for it)

sorry, I mistyped before. I meant on a single column

If I recall you can get both the before and after values (a setting in the realtime call) if so then you could at a minimum trigger on table change and filter on that column changing.  Depending on how much that table is changing might work for you.  Other than that I don't recall anything, but I've not really looked into it.

An aside, you could always set up some sort of trigger and write to a "special" table with that column changing, then monitor that with realtime