{
  "manageEntity": {
    "action": "Save",
    "entityId": "52732833",
    "entityType": "Track",
    "nonce": "0x02b995a1e1ea0904f8da23164ea1f9fb8ecaf2e801c9e1db4daadd04c9902e4b",
    "signature": "0x272e60db5a975cf111b371d1a7483dce504a3608af0d6a575e5962cb31268f181ffbae327057efced3a10f3ffb74659b719c2831b0797d98865561e248cab76a1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}