Side - `buy` or `sell`
{ "$schema": "https://json-schema.org/draft/2020-12/schema", "$id": "https://api-evangelist.github.io/deribit/json-schema/side.json", "title": "Side", "example": "`buy`", "enum": [ "buy", "sell" ], "type": "string", "description": "Side - `buy` or `sell`" }