Interaction Entity - Run Command

Currently it is possible to run commands as a player who clicks an interaction entity, but there is no convenient way to run them as the entity itself. It would be great if interaction entities also had a field where you can input a command for them to run upon being attacked or interacted with, similarly to how signs can store commands to run when clicked. In terms of implementation, the command would probably just be stored in NBT as opposed to there being a special field for it in the summon command itself.