{
  "manageEntity": {
    "action": "Save",
    "entityId": "276558968",
    "entityType": "Track",
    "nonce": "0xd656640b6585b18b8f35d9d7e83e67f854f45363d0e52acd44ec5d145255d6a9",
    "signature": "0x61a67ea3b5e4439b2ae855a02d8e8658caa67d153ea09ae7a8cecc04032855c603a847fb0d792462cffa60913bb23dbb25783ffbf0107e40b93f7e306b374cc21c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}