How to select entity alias in custom drill url

Summary:

In FCCS, we have added a custom drill URL to drill into FDI report. When we hardcode the URL with a specific entity alias, it correctly lands on the desired page. However, when we use $Entity$, it applies the filter based on the entity name in FCCS. Instead of using the entity name, we want to use the entity alias in FCCS to fetch values from FDI report. Which function to use for the same in drill URL.