{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api-evangelist.github.io/deribit/json-schema/timestamp_for_book_notifications.json",
  "title": "Timestamp For Book Notifications",
  "example": 1536569522277,
  "type": "integer",
  "description": "The timestamp of last change (milliseconds since the Unix epoch)"
}