curl --request GET \
  --url https://testnet.derivadex.io/stats/api/v1/order_book_l2

{
  "value": [
    {
      "symbol": "<string>",
      "side": 123,
      "amount": "<string>",
      "price": "<string>"
    }
  ],
  "success": true,
  "timestamp": 123
}