NIP-35: Draft Events
https://github.com/vitorpamplona/nips/blob/draft-event/35.md
下書き用の汎用的なイベント
任意のイベント (下書き) を NIP-44 (Encrypted Direct Message (Versioned)) で暗号化して `.content` に含める
PR: 
#Nostr
GitHub
Generic Draft Event by vitorpamplona · Pull Request #1124 · nostr-protocol/nips
Adds a private draft event kind for any other event type. Clients can search by supported kinds via the k tag
Read here