curl --request GET \
  --url https://api.prequel.co/import/datasets/{id}/schema \
  --header 'X-API-KEY: <api-key>'

{
  "status": "<string>",
  "data": {
    "columns": [
      {
        "column_name": "<string>",
        "prequel_type": "<string>",
        "source_type": "<string>",
        "seen_source_types": [
          "<string>"
        ],
        "seen_prequel_types": [
          "<string>"
        ],
        "in_latest_extract": true,
        "first_seen_at": "<string>",
        "last_seen_at": "<string>"
      }
    ]
  },
  "message": "<string>"
}