{
  "manageEntity": {
    "action": "Save",
    "entityId": "1118411",
    "entityType": "Track",
    "nonce": "0x8711f0ea367c744cc60323d62817a14222f494086327c90031dfc3caf003dcbd",
    "signature": "0xfe5d87a3354c5b7078375c0851a4f34c3592fe5840cec108b22e6e3af1629b75342937d462aaa6c1e7d03af5da75f687efe558bd87bad53d4eaafdc62ec73eed1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}