{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "697511",
    "entityType": "Track",
    "nonce": "0xc631ac811009ef3b7997abb6a541ebb3a62332c09231ebf3ff77184342d8dff4",
    "signature": "0xff665160a12038e518e50b444df1dc48ee4863d748e238ace1ef4ea95281125546cfb2088c9375bd14c6fe90cf05c3076fa749c11985a8c1ef58e67244228a741c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}