{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "9460",
    "entityType": "Track",
    "nonce": "0xca5bd70c47ef221bf6bf5bd1449b544eb8c2a18cfdf6be58f2a9d4fea0941bde",
    "signature": "0xd24fef24fa7fd119515dc2e97c6865168be6ef14a3eb8917df59233ad222d7666c12bcf502905cec435e5fb293b652a243918191a52c028aea9cf3b095dfe2eb1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}