How to get Azure Logic Apps Connector to connect

Good morning all.

We are trying to use Azure logic app connectors to attach to the Marketo REST API.

Azure Logic App connectors wants the following details

• Authorization Url: The API authorization endpoint to authenticate with the service.

• Token Url: The API endpoint to get the access token after the authorization has been done.

• Refresh Url: The API endpoint to refresh the access token once it has expired.

I've looked through the Marketo documentation.  

As best I can tell, Refresh isn't available, but that's OK.  We can just call the Token URL again.

However, it seems like Marketo doesn't use the Authorization URL, just the Token URL.  i.e. [My Instance Here].mktorest.com/identity/oauth/token, with client ID and client Secret.

I'm sure I'm missing something blindingly obvious.

Help....

Cheers

Jo