curl --request GET \
  --url https://api.production.hyperoru.com/api/binance/accounts/{account_id}/positions \
  --header 'Authorization: Bearer <token>'

{
  "positions": [
    {
      "side": "<string>",
      "size": 123,
      "symbol": "<string>",
      "entry_price": 123,
      "leverage": 123,
      "liquidation_price": 123,
      "mark_price": 123,
      "unrealized_pnl": 123
    }
  ],
  "total_count": 123,
  "total_unrealized_pnl": 123
}