curl --request GET \
  --url https://api.elections.kalshi.com/trade-api/v2/multivariate_event_collections/{collection_ticker}/lookup

{
  "lookup_points": [
    {
      "event_ticker": "<string>",
      "last_queried_ts": "2023-11-07T05:31:56Z",
      "market_ticker": "<string>",
      "selected_markets": [
        {
          "event_ticker": "<string>",
          "market_ticker": "<string>",
          "side": "<string>"
        }
      ]
    }
  ]
}