{
  "manageEntity": {
    "action": "Save",
    "entityId": "1769161467",
    "entityType": "Track",
    "nonce": "0x1e4c461880a4621f8025835a7806e12d1f0f87074e932f23c301c3284092cc39",
    "signature": "0x176fef46451abe6de9f381e9b01875a3406f6a34088e7d6c5929f08b3cc195a93b8b4af470c019895ec598600ce9f3b7068e57c4bde6c027170165bae115cf071b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}