{
  "manageEntity": {
    "action": "Save",
    "entityId": "1042932",
    "entityType": "Track",
    "nonce": "0xa11303c7840600930e718df88a0e8179a7dae1e33e49dcdc136e3bc62c66016d",
    "signature": "0x97f9ec20c2db865472341972bdc1bc3cd6913e7ec55dc3fe89fea4a1c0c64e4217c78a3c978f4272979adf2d0a3a7d4fe5bb7d7f346bd97d9c3f36776fa148ad1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}