获取用户黑名单列表

{
    "code": 20000,
    "data": {
        "list": [
            {
                "blocked_avatar": "https://example.com/avatar.jpg",
                "blocked_user_id": 2,
                "blocked_username": "targetuser",
                "created_at": "2024-01-01T00:00:00Z",
                "id": 1
            }
        ],
        "page": 0,
        "page_size": 0,
        "total": 0,
        "total_pages": 0
    },
    "msg": null
}