{ "$schema": "https://json-schema.org/draft/2020-12/schema", "$id": "#/components/schemas/OrderBook", "title": "OrderBook", "type": "object", "properties": { "lastUpdateId": { "type": "integer", "format": "int64", "description": "Last update ID for the order book." }, "bids": { "type": "array", "items": { "type": "array", "items": { "type": "string" } }, "description": "Bid price and quantity pairs." }, "asks": { "type": "array", "items": { "type": "array", "items": { "type": "string" } }, "description": "Ask price and quantity pairs." } } }