Hide/Show fields on search based on user role

Hi. We would like to hide some fields of messages based on user role. This is required to preserve sensitive data (like SSN, username etc) from regular users.

## Expected Behavior
Received message has their fields decoded and stored at Elasticsearch
On searches and result display, if user do not has specific role, some fields are masked or not being displayed.

## Current Behavior
All fields are being displayed and this is fine, however some sensitive data could be exposed.

## Possible Solution
Plugin or Enhancement.