{
  "manageEntity": {
    "action": "Save",
    "entityId": "160684382",
    "entityType": "Track",
    "nonce": "0x239388ea1cf251e28438c4e9c461cb7e36b7c9ea2b8f774db143b85239d4b9b7",
    "signature": "0xdb3a0893a938f3729cca031e8b475f815ba9cda11c01cc882753201c541c677608e87febbb21429af3986e2088648b06177af10924734aae5cad1eeb522e28c71b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}