BlacklistItem

{
    "id": 1,
    "user_id": "user_123456",
    "blocked_user_id": "user_123456",
    "reason": "发送垃圾信息",
    "created_at": "2023-10-17T12:00:00Z",
    "blockedUserInfo": {
        "user_id": "user_123456",
        "nickname": "张三",
        "avatar": "https://example.com/avatar.jpg",
        "friend_verify": "none",
        "language": "zh-CN"
    }
}