{
  "manageEntity": {
    "action": "Save",
    "entityId": "1433660186",
    "entityType": "Track",
    "nonce": "0x818a98cf603f5c6bc716f0c57634a0e941c7df584b07e27b85c8909916aa69b3",
    "signature": "0xa80ab15bc72cbc85383131aedeb8bf5e5b721f6fc9fdebbe1da132f01ba8589e6f07b91db500cc1a4a7ada801660ad065cd82887861f7735ca0b91f1a769b8881c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}