{
  "manageEntity": {
    "action": "Save",
    "entityId": "1867618362",
    "entityType": "Track",
    "nonce": "0x4878af84c1e3434d4b9b47dd0dce5295a21bf5dce642cd915bb0674fa24c73d2",
    "signature": "0x11ebab3266b81c24293148b3084355694ce80aab984be8851a6e4ed8317172623cce525da3f4a05091271f5287805f0fbee2ddb42bdb220ca09c5b2c6bdd92f11b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}