How to retrieve sensitivity labels associated with user using API or .NET?

I’m trying to pull a list of sensitivity labels associated with a specific user using the Microsoft Graph API, but I’m hitting a wall. Here’s the API call I tried:

GET https://graph.microsoft.com/v1.0/users/{id}/security/informationProtection/sensitivityLabels

Unfortunately, I got a 400 Bad Request error and the message said something about an unexpected segment:

{
    "error": {
        "code": "Request_BadRequest",
        "message": "Unexpected segment DynamicPathSegment. Expected property/$value.",
        ...
    }
}

I also tried this in C# like this:

var result = await graphClient.Users["{id}"].Security.InformationProtection.SensitivityLabels.GetAsync();

But I ran into this error:

CS1061 'UserItemRequestBuilder' does not contain a definition for 'Security'...

Has anyone successfully retrieved sensitivity labels for a user? If so, could you point me in the right direction? I’d really appreciate any help!

Note that, retrieving sensitivity labels associated with user via MS Graph API is available only in Beta version not in v1.0.

I have below list of sensitivity labels associated with user of my tenant:

Now, I registered one app and granted InformationProtectionPolicy.Read.All permission of Application type with admin consent like this:

When I ran below API with v1.0 endpoint using token generated with client credentials flow, I too got same error:

GET https://graph.microsoft.com/v1.0/users/{id}/security/informationProtection/sensitivityLabels

Response:

To resolve the error, make sure to use /beta endpoint where I got the response with labels details successfully as below:

GET https://graph.microsoft.com/beta/users/{id}/security/informationProtection/sensitivityLabels

Response:

Reference:

List sensitivityLabels - Microsoft Graph beta