{
  "manageEntity": {
    "action": "Save",
    "entityId": "1146306012",
    "entityType": "Track",
    "nonce": "0xad26d3b84737187e1c17cb2737c287917b55932247289be3638018724bc6ad6f",
    "signature": "0x0c982ee76ef0677dd86cf39955b627b34412166cb00283ddba4c4d17dca45f290fddac31e9934eb6895346acb985677d4714a4e40c90d7624ced4ec5f464394a1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}