{
  "manageEntity": {
    "action": "Save",
    "entityId": "2056217989",
    "entityType": "Track",
    "nonce": "0x0927d0e17147a9556f76e7e5f5deef25148cf545d43735a8c6a3856c5342988c",
    "signature": "0x90dfdc6421ff2570f5b4c026fab393f6d781ca68c49d5be9b38557ef52234d6457c93286e3d0d1a003def41e5ea7189272de1b5e7a45d41905c5a7fcad12c8541b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}