Create an open extension
POST https://graph.microsoft.com/v1.0/me/extensions
Request Body
{"@odata.type"=>"microsoft.graph.openTypeExtension", "extensionName"=>"com.contoso.roamingSettings", "theme"=>"dark", "color"=>"purple", "lang"=>"Japanese"}
HEADERS
| Key | Datatype | Required | Description | 
|---|---|---|---|
| Content-Type | string |