{
  "manageEntity": {
    "action": "Save",
    "entityId": "1297228562",
    "entityType": "Track",
    "nonce": "0x7225cebf43d9563bcf381e01de095c265ed8a8fef89e757783f6e06eecd92099",
    "signature": "0xabc0326ff3106bcf1b5fdfcc99f24c212a64d16938add6ad29996fd6d0e83afb027b147759bf1f713c7e9d38430aeb5ed931fedef4547acc798682b74b2820e81b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}