{
  "manageEntity": {
    "action": "Save",
    "entityId": "1712437013",
    "entityType": "Track",
    "nonce": "0x8acc769106b792a131e0f78eb6adc7ccfcb7c96ba9928c58e08d0b99ab23b60d",
    "signature": "0x8d69c68d20668ba65b63a4ca72ce00500ba1ff99f94c23a2f5427bf25f7a35472db9777a983a6d27dcc239b201ed650560dcceb30fb16591dccd5478d32923541b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}