custom entity that behaves like a painting

[deft gale]

i want to create a custom entity that supplements the original vanilla lineup of paintings (i.e. adding my own custom paintings without directly editing the kz.png file). is there a way to do this?

[proud canyon]

I think with the painting runtime id?

[deft gale]

i checked the entities section of the vanilla behavior pack, cant seem to find the painting json file