/watchlist/prop

Removing something that was never on the watchlist is a 200, not a 404: the original does not check the affected row count, and the caller's intent — the prop is not on the list — holds either way.

curl -X DELETE "https://example.com/api/v2/watchlist/prop"

{  "$schema": "https://example.com/schemas/MessageEnvelope.json",  "message": "string"}