{
  "manageEntity": {
    "action": "Save",
    "entityId": "1071388332",
    "entityType": "Track",
    "nonce": "0xf1370788aa164c8580cf344324dffd357e68264c091ef17b09c3984bb55934c3",
    "signature": "0x55b0b878b4f8c0576065d41775132da8e7d7166e2ab730d088a9770778e31be732a6b63f177aeda9e68cc9339929916d7fba04b31935cabc233f9cb879ec216e1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}