curl --request GET \
  --url https://api.simmer.markets/api/sdk/wallet/{wallet_address}/positions

{
  "wallet_address": "<string>",
  "position_count": 123,
  "positions": [
    {
      "market_title": "<string>",
      "condition_id": "<string>",
      "token_id": "<string>",
      "side": "<string>",
      "shares": 123,
      "market_slug": "<string>",
      "current_price": 123,
      "current_value": 123
    }
  ],
  "total_value": 123
}