curl --request POST \
  --url https://api.bold-factory.com/v1/planning/purchaseOrders/{orderReference}/files \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form formFile='@example-file'

{
  "id": "<string>",
  "fileName": "<string>",
  "tags": [
    "<string>"
  ],
  "readOnlyUri": "<string>",
  "contentType": "<string>",
  "systemManaged": true,
  "createdAt": "2023-11-07T05:31:56Z",
  "createdBy": "<string>",
  "lastModifiedAt": "2023-11-07T05:31:56Z",
  "lastModifiedBy": "<string>"
}