{
  "manageEntity": {
    "action": "Save",
    "entityId": "1358506400",
    "entityType": "Track",
    "nonce": "0x0a4f68d8d8f9f2290e11154aa63d6b1a3f97874683c3f543c1afd118a05ea2fa",
    "signature": "0x9bb54442b3004f12c7b27e9ff9a683091a8c2167aed5cb8ba8670e40216287fe3edadbff7266629eba423d4510527834df5f3cf69a385f49a9e61972eda9fc071b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}