Document being deleted randomly

We have a document in database, that is being deleted randomly. Not able to trace how and who is deleting that document. The following is the log we get from database.

Clueless what to do. Can you please suggest if there is way to know how this document being deleted…is there any trigger / trace / restriction etc. we can place on our document.

Also not sure what is the meaning of user: @cbq-engine

“description”:“Document was deleted”,
“name”:“document delete”,