schema.RecentActivityResponse

{
    "new_users": [
        {
            "avatar": "https://example.com/avatar.png",
            "created_at": "2024-01-01T00:00:00Z",
            "email": "new@example.com",
            "id": 1,
            "username": "newuser"
        }
    ],
    "recent_comments": [
        {
            "avatar": "https://example.com/avatar.png",
            "content": "很有见地的评论",
            "created_at": "2024-01-01T00:00:00Z",
            "id": 1,
            "post_title": "技术分享帖",
            "username": "testuser"
        }
    ],
    "recent_posts": [
        {
            "avatar": "https://example.com/avatar.png",
            "category_name": "技术讨论",
            "created_at": "2024-01-01T00:00:00Z",
            "id": 1,
            "title": "技术分享帖",
            "username": "testuser"
        }
    ]
}