{ "$schema": "https://json-schema.org/draft/2020-12/schema", "$id": "#/components/schemas/file_reference", "title": "File Reference", "type": "object", "description": "The file reference. Can be a file in PayPal MediaServ, PayPal DMS, or another custom store.", "properties": { "id": { "type": "string", "description": "The ID of the referenced file.", "minLength": 1, "maxLength": 255 }, "reference_url": { "type": "string", "description": "The reference URL for the file.", "format": "uri", "minLength": 1, "maxLength": 2000 }, "content_type": { "type": "string", "description": "The [Internet Assigned Numbers Authority (IANA) media type of the file](https://www.iana.org/assignments/media-types/media-types.xhtml)." }, "create_time": { "$ref": "#/components/schemas/date_time", "description": "The date and time when the file was created, in [Internet date and time format](https://tools.ietf.org/html/rfc3339#section-5.6)." }, "size": { "type": "string", "description": "The size of the file, in bytes.", "pattern": "^[0-9]+$" } } }