In the meantime, I'll assume you mean a (like Trello, Jira, or Notion) where a user can work with multiple boards (each board containing lists/cards/items).

List id: string boardId: string (Board.id) name: string order: number

Board id: string name: string ownerId: string (User.id) createdAt: timestamp updatedAt: timestamp isArchived: boolean isStarred: boolean background?: string