I have the parameters set with:

params[opensocial.ContentRequestParameters.AUTHORIZATION] = opensocial.ContentRequestParameters.AuthorizationType.SIGNED;

 But all I receive on my end is the owner and viewer ids. Is this part done yet?

Hey, it's not yet up and running.

It is actually implemented on the proxy, but the correct parameter is not being passed in the request to the proxy.  So you can workaround this by supplying the parameter yourself in your url for now.  Simply include opensocial_authtype=SIGNED in your query string.  The SIGNED value is case sensitive.  With our next build the container will be adding the parameter itself so this is not needed.

 Additionally, you can use our OAuth tool to help you test your request handling of signed requests on your end.

 Any idea when this problem will be fixed?

 See Also: http://developer.myspace.com/Community/forums/p/326/1166.aspx#1166

In summary, the problems with the makeRequest oAuth authentication appear to be:

• Empty oauth_token parameter.
  
• Empty oauth_signature parameter.
• Invalid oauth_timestap