{
  "manageEntity": {
    "action": "Save",
    "entityId": "826234702",
    "entityType": "Track",
    "nonce": "0x03b1ff9d42d9512ab9a8d3cd13d29f0cde7d2e9a321cebfbad60f8328a4f63fa",
    "signature": "0x74540d80e5a021bf94d27d1e2d985febcfcfaf87b7ca2ff8314c8fabec572fe806824c78e921bad2d6f2dd84e6ef11608a4920aeeed10f8426cf3fb8e53d0e4b1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}