{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059092",
    "entityType": "Track",
    "nonce": "0x887e01a2e4e550d772113be609ae900cfcbe612d8e11c155a73da3c40aac87be",
    "signature": "0x4d778cf67a642b2f3c53adedf429c54f2e6cba9f59efdb082fe32f0f570e469142922c0836ba99c0f34ce61df957aa5a4e56b9537e444d50f9d015ab8f4ce8921c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}