{
  "manageEntity": {
    "action": "Save",
    "entityId": "1411706177",
    "entityType": "Track",
    "nonce": "0x79376c948f119dd70306e61c69a4bfc583040580ec1d3a26bfa5cad4b00c9910",
    "signature": "0xc8c786d78a207f36c5f6f4ee8c91f0792bec53e2636019e6a3ab8809d062b08122dc3339ddc036be413e6566ee1ccfd9b402280321013b6f2d307a82c23b969a1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}