{
  "manageEntity": {
    "action": "Save",
    "entityId": "115989",
    "entityType": "Track",
    "nonce": "0x56d9ea946d03676e1f44e4dacf0b7485b1ca569323f4a6b0213816eb2c23f376",
    "signature": "0x69341b8be9309809c5f147bd28ef66c338bfa05e1c598f555029c0ee740992827d76e87e3a08dfb41e9633d012e98816ef86a0c098fabb3d784e2460cd2019001c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}