WCF Service error while executing PowerShell commands in FAST Search Server

I was trying to execute some PowerShell commands from the FAST Search for SharePoint powershell and it was throwing a exception like “Failed to communicate with the WCF service”. On further investigation I found that to execute some commands the current logged in account should be part of FASTSearchAdministrators group. This is a windows group which get created once the FAST search is installed on the server. So if you need to run commands like Set-FASTSearchMetadataManagedProperty which helps to configure the Managed Metadata properties for FAST you need to make sure that current log in account is part of this group.