How to deploy Slack on macOS using MDM with configuration profile disabling updates?

I want to install Slack over multiple macOS via MDM, using Munki but I don't want the deployed Slack to update themselves: This is MDM's job to deploy new version when needed. This "An update on disabling Slack auto-updates" article gives a way using AutoUpdate key (as described in Slack's documentation ) that can be added to a *configuration profile*:

PayloadContent
    
      
        AutoUpdate
        
        PayloadDisplayName
        Slack Auto-Update Settings
        PayloadIdentifier
        com.tinyspeck.slackmacgap.7F10399D-8AE8-419F-B4BA-3F0A0E96E33C
        PayloadType
        com.tinyspeck.slackmacgap
        PayloadUUID
        0342513E-235C-4D59-9C01-3D3CBB65F5D0
        PayloadVersion
        1
      
    
    PayloadDisplayName
    Slack Auto-Update Settings
    PayloadIdentifier
    com.yourcompany.profile.6C5258EA-2E47-41B3-8ABB-C589A2E7B917
    PayloadOrganization
    Your Company
    PayloadType
    Configuration
    PayloadUUID
    463E5146-FF42-4909-9F4A-12A84E2EEF57
    PayloadVersion
    1

On my MDM, I've added this *PayloadContent* to the custom *Pkginfo* of the application for installing Slack (from Slack-4.44.60-macOS.dmg). Installation on macOSes works but when Slack launches it asks for admin credentials in order to install an update. What's the correct MDM way to deploy Slack with AutoUpdate=false so that it won't try to update itself?