{
  "manageEntity": {
    "action": "Save",
    "entityId": "17030",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xca4bb7d610fa1377c4bd25d74f7714b0a3be89e45232b28aa688d6a08a39c343",
    "signature": "0x4013c94a1a3206e7ab0f0954d47eea5f04fbcbb34955d50dc79f9b4aa55e1aa836f5038b0992465f83a35e4e6030cd75fea6f93b530e88a69d205b23d3fdddc11b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}