curl --request PUT \
  --url https://api.hubapi.com/cms/source-code/2026-03/{environment}/content/{path} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form file='@example-file'

{
  "createdAt": 123,
  "folder": true,
  "id": "<string>",
  "name": "<string>",
  "updatedAt": 123,
  "archivedAt": 123,
  "children": [
    "<string>"
  ],
  "hash": "<string>"
}