SongRankingResult

{
    "rankings": [
        {
            "rank": 0,
            "userId": "string",
            "userName": "string",
            "profileImage": "string",
            "exScore": 0,
            "bpi": 0,
            "isSelf": true
        }
    ],
    "totalCount": 0,
    "selfRank": 0
}