{
  "manageEntity": {
    "action": "Save",
    "entityId": "1317836039",
    "entityType": "Track",
    "nonce": "0x46438a1c8f28527f15277d80e8f81bb04bc0c08e94b6af2ad99a44b97dae8364",
    "signature": "0x8ffba998b104cb9ab704b6f88d0c422b6b7735e38452c462a2e594df885b222e7ba3d43643a25fcfa692748c71381b17370ac9ba128015bf469f313dbc6c73661c",
    "signer": "0x9f626266e85130670e9C002080890a798eEF36E4",
    "userId": "649996433"
  }
}