curl --request GET \
  --url https://api.ivory.finance/v1/topics/{topic_id}/companies \
  --header 'X-API-Key: <api-key>'

{
  "topic_id": 123,
  "topic_name": "<string>",
  "topic_slug": "<string>",
  "companies": [
    {
      "cik": "<string>",
      "relevance": 123,
      "mentions": 123,
      "company_name": "<string>",
      "ticker": "<string>",
      "affinity": 123
    }
  ]
}