{
  "manageEntity": {
    "action": "Save",
    "entityId": "1182669889",
    "entityType": "Track",
    "nonce": "0xb5e9625243e4042c9cc7dbdd2e7775460963f7afb5f1fa871edc64267c119dcb",
    "signature": "0x313de8a27a77d84cd77ad57abc53330dfd9a2fd5af3d8e7103197a5894c0343241f0834148f1955443b8a07278e4cad6d31b0b90d3a824cae73e33ace5bd8c1a1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}