connect from an app and authenticate user

Hi,

I want to get profile information for an user of an app. So I tried to post the following URL:

index.php?option=com_easysocial&view=profile&format=json

All I get are some information about the super user. I think I need to authenticate my user first and so I tried to do that using the following URL:

index.php?option=com_easysocial&view=account&username=MYUSERNAME&password=MYPASSWORD&format=json

But all I get back is an empty reply without an user id or auth code. What are the correct parameters and URLs to be used?

Thanks a lot
Peter