| Name | Type | Description | Notes |
|---|---|---|---|
| title | string | The title of the attachment. If the title is blank or not provided, the title will derived from the file name. | [optional] |
| file_name | string | The file name of the attachment. | [optional] |
| file_data | string | The base64-encoded contents of the source file. The supported file types are png, jpg, pdf, xls, xlsx, doc, docx. | [optional] |