{
  "manageEntity": {
    "action": "Save",
    "entityId": "1423112627",
    "entityType": "Track",
    "nonce": "0x24fcea38de0e8fb3c07c0eb833f6a0a04b9a6e80bba523f36c0f170b4786b117",
    "signature": "0xba40ac46e0ba1beb71ea4fff74824eddf489113eb2717b84d93022f3604896d561fd7d5236dd2cf5edf6bde0b879dd91b4f03ddcce0f4417b08f4a2fd077310a1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}