curl --request GET \
  --url https://api.hypereth.io/v2/hyperliquid/getTOB \
  --header 'X-API-KEY: <api-key>'

{
  "data": [
    {
      "symbol": "BTC",
      "bidPrice": "65000.1",
      "bidSize": "0.5",
      "askPrice": "65000.2",
      "askSize": "0.7",
      "midPrice": "65000.15"
    }
  ],
  "dataTime": 1710000000000
}