{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbccf53b62350cdc34e3355e0694bfe10a9779e7a65291dcfcc0dfd2d833eff6b",
    "signature": "0x7e4bdc3e1bb8f43dbff23f708f23aeaf85bbe9d35ff466e637e8910d8f6851d034a83a12e227283ee5483dd84220b9abf37711a1e08691130b2b324d7843c6661b",
    "signer": "0x009aa7b49eAF9a76b4b0e1D3C0ef92ba4e8ECEa4",
    "userId": "350390967"
  }
}