{
  "manageEntity": {
    "action": "Save",
    "entityId": "80377902",
    "entityType": "Track",
    "nonce": "0xaf93fdc84d8ffa95117c271ee73b36ef4b4ff37d12be1a685de1ca42bc0dea8e",
    "signature": "0xf0b7a8b0e02e96c4bfda5a3544fc51aa51b89fa51f514900350ceb48223a62fc4c603ebdb0e1c715855a6ba934af52c7acb5a60bf801a311e8d2577f13550b371c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}