{
  "manageEntity": {
    "action": "Save",
    "entityId": "1038992130",
    "entityType": "Track",
    "nonce": "0x0a5002343317d18e941ea53aaafe316387da0e59e8936b7b2db6da02a970181f",
    "signature": "0x5ef30fa0f9cb363bed3393ff015ff7c0620e5572f5ec528ab339407e622e6343015128fdf1435f8ec39db871fc7e5c033d032160d679ad5ff8e83ed38897387c1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}