curl --request GET \
  --url https://api.blink15.com/book

{
  "asks": [
    {
      "price": "<string>",
      "size": "<string>"
    }
  ],
  "asset_id": "<string>",
  "bids": [
    {
      "price": "<string>",
      "size": "<string>"
    }
  ],
  "market": "<string>",
  "min_order_size": "<string>",
  "neg_risk": true,
  "tick_size": "<string>",
  "timestamp": "<string>",
  "hash": "<string>",
  "last_trade_price": "<string>"
}