{
  "manageEntity": {
    "action": "Create",
    "entityId": "669561732",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\" part of history for music. The instrument where on that right tune. Sweet \",\"entity_id\":997285394,\"track_timestamp_s\":58}}",
    "nonce": "0x6be1d568b2e38d163ba49fdf4ae5c97c70cba1c7dc2c67393d8f8295b7d280a8",
    "signature": "0x9e81d3b29f675fd49b8fa137508cc931f675d1a6aff8d1a487df72875cb08c1f05af9058bb8790e3798cf77d2695bed6994dfb1ab9c6921323832edf45f21eef1b",
    "signer": "0xac9398fE3324BB093c993C791Db4a36624f5a248",
    "userId": "223946715"
  }
}