schema.CategoryAnnouncementResponse

{
    "category_id": 1,
    "content": "版块公告内容",
    "created_at": "2024-01-01T00:00:00Z",
    "id": 1,
    "is_pinned": true,
    "title": "版块公告标题",
    "updated_at": "2024-01-01T00:00:00Z",
    "username": "moderator"
}