App Configuration in JSON Format

Hi folks, i'm facing a problem with Intune App Configuration Profiles.

At first let me outline the scenario:

• we want to use Android Enterprise Multi-App Kiosk Devices
• Everything belonging the multi-app kiosk is already working perfectly
• Now we want to limit the use of the Edge Browser, so that the user can only browse to certain webpages.

So what I've done:

• Created an app configuration policy with type "managed device"
• The configuration designer states, that i should use the json editor. (Only one setting is available in the config designer.)
• (Managed app is only possible if there are users signed in to the android device, therefore this type of app config policy is not applicable.)
• Afterwards i've started to build the json config, but this seems not to work:

{
    "kind": "androidenterprise#managedConfiguration",
    "productId": "app:com.microsoft.emmx",
    "managedProperty": [
		{
            "key": "com.microsoft.intune.mam.managedbrowser.homepage",
            "valueString": "https://www.sample.com"
        },
		{
            "key": "com.microsoft.intune.mam.managedbrowser.managedTopSites",
            "valueString": "Sample 1|https://www.sample.com||Sample 2|https://www.sample2.com
        },
		{
            "key": "com.microsoft.intune.mam.managedbrowser.AllowListURLs",
            "valueString": "https://www.sample.com|https://www.sample2.com"
        },
		{
            "key": "com.microsoft.intune.mam.managedbrowser.NewTabPage.IndustryNews",
            "valueBool": true
        }
    ]
}

I got the parameters from this docs.microsoft.com .

After saving the json it looks like this: (no config keys and value types?!)

I would be so happy if anyone has some hint for me on how to solve this particular issue. 🙂

Thank you in advance.

Kind greetings

Patrick