{
  "manageEntity": {
    "action": "Save",
    "entityId": "2019871351",
    "entityType": "Track",
    "nonce": "0x89962f36b853fe8c94f06a232ebb73a2fa4a5dbcc562509bff44b74f4c2052ac",
    "signature": "0x707a89478d2b460f9c492f7c7df47495c6cfc47683a19ac6b168c6a704bdae3827888f0cdd92c8a15fffbd500250246b20d80b03d8cf081710e63942475cea401b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}