curl --request GET \
  --url https://api.predexon.com/v2/polymarket/markets/smart-activity \
  --header 'x-api-key: <api-key>'

{
  "smart_wallet_criteria": {},
  "window": "1d",
  "markets": [
    {
      "condition_id": "<string>",
      "smart_wallet_count": 123,
      "smart_volume": 123,
      "smart_realized_pnl": 123,
      "smart_total_pnl": 123,
      "avg_smart_roi": 123,
      "avg_smart_win_rate": 123,
      "net_buyers_pct": 123,
      "title": "<string>",
      "market_slug": "<string>"
    }
  ],
  "pagination": {
    "limit": 123,
    "count": 123,
    "has_more": true,
    "pagination_key": "<string>"
  }
}