{
  "manageEntity": {
    "action": "Save",
    "entityId": "76342170",
    "entityType": "Track",
    "nonce": "0x267cc92824f9a72304671a77002d78c6751dc89a7aae1d84282654e7604f5829",
    "signature": "0x0780c85e1df580c534f0efa4cbe474e9876aa811dafe05ce92fa09deb8ff056f59c4b1f6ac8149612088506ff2a175f3b042c0ddba8dd1b2afd8a87b232c794a1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}