type: object
required:
  - variant_id
  - quantity
properties:
  variant_id:
    description: The ID of the product variant associated with the item.
    type: string
  quantity:
    description: The quantity of the item.
    type: number
  metadata:
    description: An optional set of key-value pairs to hold additional information.
    type: object
    externalDocs:
      description: Learn about the metadata attribute, and how to delete and update it.
      url: >-
        https://docs.medusajs.com/development/entities/overview#metadata-attribute