{
  "manageEntity": {
    "action": "Save",
    "entityId": "182643",
    "entityType": "Track",
    "nonce": "0x848a1c76093d14beb0fac631ba3554d4a3c6a720f66416f18202480705a50901",
    "signature": "0xd99559a9823dd91d3e7eb95639d3e1994e8e6d630ae26a1e7ddb2d1e549e230b71ce01a1e328a877b319c2990f26dbdad05989b297a4d05c0712ac11e7fc34b31c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}