Problem creating a user with user.save via the Services Browser

I have been trying to use the Services Browser at http://www.example.com/admin/build/services/browse/user.save to figure out how to provision a user. The idea is to login to an account that is allowed to create users from a device like an iPhone or Android. Get the user information and away we go.

But I have been having trouble formatting the request.

Sending the parameter as serialized PHP :

   stdClass Object ([name] =>'jazzMaster1', [pass] => 'test', [mail] => 'jazzMaster1@example.com' });

or:

   stdClass Object ([username] =>'jazzMaster1', [password] => 'test', [e-mail] => 'jazzMaster1@example.com' });

I get :
* Username field is required.
* Password field is required.
* You must enter an e-mail address.

The output of the code suggested on http://drupal.org/node/467786

$obj = (object)array(
  'name' =>'jazzMaster1','pass' => 'test','mail' => 'jazzMaster1@example.com' 
);
print serialize($obj)."\n";

This crashes the server:

O:8:"stdClass":3:{s:4:"name";s:11:"jazzMaster1";s:4:"pass";s:4:"test";s:4:"mail";s:23:"jazzMaster1@example.com";}

However adding "(" ... ");" is OK:

(O:8:"stdClass":3:{s:4:"name";s:11:"jazzMaster1";s:4:"pass";s:4:"test";s:4:"mail";s:23:"jazzMaster1@example.com";});

But, I get :
* Username field is required.
* Password field is required.
* You must enter an e-mail address.

Does any wizard know how to provision an account with user.save in the services module?