As a system admin, I rather frequently create specialized projects for other teams. Once done and they begin to use the projects, I get ALL the updates in my updates feed because I am listed as the "Entered By" on the project. Per Workfront Support, there is no way to change that at this time.
This idea can go one of two ways, whichever is easier:
1. Allow the "Entered By" field to be changed, or,
2. Allow the in app notifications sent to the "Entered By" to be opted out of.