{ "$schema": "https://json-schema.org/draft/2020-12/schema", "$id": "https://opensea.io/schemas/Order", "title": "Order", "type": "object", "properties": { "order_hash": { "type": "string" }, "chain": { "type": "string" }, "protocol_data": { "$ref": "#/components/schemas/ProtocolData" }, "protocol_address": { "type": "string" }, "asset": { "$ref": "#/components/schemas/OrderAsset" }, "remaining_quantity": { "type": "integer", "format": "int64" }, "order_created_at": { "type": "integer", "format": "int64" } }, "required": [ "chain", "order_hash", "remaining_quantity" ] }