{
  "manageEntity": {
    "action": "Save",
    "entityId": "1298618172",
    "entityType": "Track",
    "nonce": "0x6c6980f5fa5328d54c0ebd0348f43cf7e05a1de1ee2a6fb14618f4e62289ca33",
    "signature": "0x1f931519ef2aa719e5a392ce0edb3988b189fe0082b3e1ea8bd9f266ce1f3c8830d6f7e72a1168b1f46aa00f164d3942cc134c2f0d756f1d7801a1b79ae661301b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}