Office 365 administration center allows to create organizational contacts which are shared with all users in organization.
In MS Graph documentation API of this functionality is badly documented and located in BETA section. Moreover, there is no command to create such a contact: https://developer.microsoft.com/en-us/graph/docs/api-reference/beta/resources/orgcontact
It looks like in Graph this functionality was not implemented. Using typical POST request to the /beta/contacts ends with an error response in Json structure: Unsupported resource type 'Contact' for operation 'Create'.
Note 1: I don't have any user logged in. My application uses service/daemon authentication.
Is there any other way to create organizational contact?