{
  "manageEntity": {
    "action": "Save",
    "entityId": "151829547",
    "entityType": "Track",
    "nonce": "0x824ddfece594546fc72a660174d56a0efd193cc3565e40b100b7df3444bc9f7f",
    "signature": "0xe9b1b88c4d9f456827256adef9c5dfcb357dade92aa66eccc6f724cc6f088c502391592810070bfc81d497d6a57e563aa29ab37141d5dd411554c3cf175a53d81c",
    "signer": "0xC56E1ccbA93c1E645e5F27Bf8A5ca13eB7A5eEbe",
    "userId": "335878078"
  }
}