{
  "manageEntity": {
    "action": "Save",
    "entityId": "230233",
    "entityType": "Track",
    "nonce": "0x159c056435d18819bc2fd25b8aad3453232a1878deca5851f5522f0d2de25b43",
    "signature": "0xd27dcf294490ba4102e98b44ee53e72ad01a0ebad77032d705d2c1eafb055fc5473c25ca88df55b300d440ab21971b2e2c9f6a00274b41e6c3735d68aa44b3e31b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}