{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1489067009",
    "entityType": "Track",
    "nonce": "0x76238e205694120c2a4be2686637dc8a43c75218d635c2c7246c38e47913ae20",
    "signature": "0xa416a142ce0a76818a9536f592ef16387fb97daf4a6845714d7437413575fa74015658a734dd244e27c0e47ae88ff0b3aaf03eecfba67b6d1e1f61fba8eaed401b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}