Delete inbox file operation leads to incomplete remove message sent to CEGA

[kjellp]

Describe the bug
When issuing a "delete file in inbox" operation in the REST interface (i.e. using lega-commander), the message being posted by the MQ Aspect to CEGA is incomplete. It has "filesize":0 and "file_last_modified":0.

To Reproduce
Steps to reproduce the behavior:

1. List your files in your inbox using "lega-commander inbox -l"
2. Select a file to delete: "lega-commander inbox -d delete-this-file.c4gh"
3. Log into ega.elixir.no and inspect proxy server log to see MQ message posted to CEGA: "docker logs proxy-container-id | less"
4. Observe wrong message

Expected behavior
filesize should be set correctly.
file_last_modified: check docs for what info this should contain

Screenshot