Receiving 701 "folder cannot be null" response for create program endpoint

Hey everyone,

Trying to connect to the create program endpoint (Create a Program » Marketo Developers ) and am consistently receiving a 701 "folder cannot be null" error.

Here's my request body: {:folder=>{:id=>35, :type=>"Folder"}, :name=>"Blah blah some program", :type=>"Event", :channel=>"Live Event"}

Sending the request with a content-type header of application/json.

Is the documentation incorrect on this one? It clearly states that a folder param is required, which is an object including members id and type.  id must be a folder id and type must be folder.

Thanks in advance!