curl --request GET \
  --url https://gateway.polymarket.us/v1/series/id/{id}

{
  "series": {
    "id": "<string>",
    "ticker": "<string>",
    "slug": "<string>",
    "title": "<string>",
    "subtitle": "<string>",
    "seriesType": "<string>",
    "recurrence": "<string>",
    "description": "<string>",
    "image": "<string>",
    "icon": "<string>",
    "layout": "<string>",
    "active": true,
    "closed": true,
    "archived": true,
    "featured": true,
    "createdAt": "<string>",
    "updatedAt": "<string>",
    "volume24hr": 123,
    "volume": 123,
    "liquidity": 123,
    "startDate": "<string>",
    "commentCount": 123
  }
}