{
  "$schema": "http://json-schema.org/draft-07/schema",
  "$id": "UUIDV4",
  "type": "string",
  "title": "A UUID V4",
  "description": "A valid uuid v4",
  "pattern": "^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$",
  "format": "uuid"
}