#nostrNoob question... is it possible to do multi-sig nostr accounts? or some other way of migrating from 1 private key to a new private key?

The usecase I'm thinking of is ... someone starts out using a self hosted privatekey and then wants to migrate to a new key that's hosted?

Like if I setup a retail identity with a priv/pub key and then wanted to move it to something like nostr:npub15klkdfx9sh3y096a5jf895rcvkmkzvly2fm9dgxq6huqhp9576jsav4m73 when I have an online store setup.