get http://localhost:8087/api/export/v2/query/file
Allows you to access and download client files based on the file key.
The file key can be obtained from the response of the 'query client by id' call. The key is available in the flowData object, under the corresponding flow ID, within the fileData attribute.
Confirm authorization using Authorization v2.
Query parameters should include a key query which is a Base64 encoded string,such as: key=base64encoded.