{
  "manageEntity": {
    "action": "Save",
    "entityId": "1363414685",
    "entityType": "Track",
    "nonce": "0x14f6b6df0d3e6e948233896c385f8f303e756fe81686fe7497475a0327fdddb9",
    "signature": "0x613ff6da625e30f1ce01bfed518641d7fe8acce494f3f96b003e588b2afcf2a57aba73a3bde1a17dc8a44cd752df4be99d4b55490b8bfbdf96c89cf27d6814c41c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}