Update
For the latest version of this code please visit msgraph-sdk-powershell-examples.
Deprecated Content
Granting a Managed Identity (Automation Account or Logic App) access to a Microsoft Graph using the Microsoft Graph SDK for PowerShell and the Get-MgServicePrincipal
and New-MgServicePrincipalAppRoleAssignment
cmdlets.
PowerShell Code
Note: This code requires the Microsoft Graph SDK for PowerShell.