{
  "manageEntity": {
    "action": "Save",
    "entityId": "416115703",
    "entityType": "Track",
    "nonce": "0xf314167019ff6b8f542bf0131912cd730a59843ceccab0b4ed57260ae2e529ae",
    "signature": "0xa2c7254ec84f3bd08bea52e0af454dec72cab5d8ec36014d5a9efe30470a629433bab1c3b44e8a0fa4e0f6c5dfc0bf918dffda7436c6e7b5420ea620bef375d41c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}