curl --request GET \
  --url https://api-testnet.gte.xyz/v1/markets/{market_address}/book

{
  "asks": [
    {
      "price": "<string>",
      "size": "<string>",
      "number": 123
    }
  ],
  "bids": [
    {
      "price": "<string>",
      "size": "<string>",
      "number": 123
    }
  ],
  "timestamp": 123
}