{
  "manageEntity": {
    "action": "Save",
    "entityId": "1422633205",
    "entityType": "Track",
    "nonce": "0x7a25b667107aa5b9711a1c532b5228b55582b870d5134d4675be6d94a8d378b3",
    "signature": "0x2bcd3d4894c5b34b74c136f7e31a8f14ce73b8bc89931217b968955caebe1d471aa57447eb1f4076fa193de4d51aedce145c4a88c9c919a740ed72be4a9fb6621c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}