curl --request GET \
  --url https://api.ekiden.fi/api/v1/market/orderbook

{
  "result": {
    "a": [
      [
        "<string>"
      ]
    ],
    "b": [
      [
        "<string>"
      ]
    ],
    "mts": "1672531200000",
    "s": "BTCUSDC",
    "seq": 21,
    "ts": "1672531200000",
    "u": 1
  },
  "time": "1672531200000"
}