Is it possible to restrict the amount of data ('gate' the data) sent to unauthenticated (angularFire) clients in firebase?

Is it possible to restrict the amount of data ('gate' the data) sent to
unauthenticated (angularFire) clients in firebase?

Here I am fetching the data using angularFire:

angular.module('FireApp', ['firebase'])
.controller('Document', function($scope, $routeParams, angularFire){
var url = "https://my-account.firebaseio.com/test" + "/" +
$routeParams.data;
angularFire(url, $scope, data);
});
The problem is that this will load the
'https://my-account.firebaseio.com/test/data' and all of its children and
grandchildren etc..
The '/data' is an array of objects, which can (but doesn't have to - it
could very well be an array of Strings) look similar to the parent of
"/data":

data: ["0" : {
"data" : [...],
"meta" : {
"active" : false
},
"sign" : [...]
},
"1" : {
"data" : [...],
"meta" : {
"active" : true
},
"sign" : {...}
},
"2" : {
"data" : [...],
"meta" : {
"active" : false
},
"sign" : {...}
}]
Basically, I want all unauthenticated angularFire clients to receive ONLY
those elements of the data array, where the boolean flag meta.active =
true, i.e. the active flag need to decide whereas its grandparent will be
sent to the client upon the angularFire request. Only authenticated
clients should receive all the data. Can I make such rules with Firebase
Simple Login and Security Rules? If this can't be done for a grandparent,
the 'active' flag can be moved one level up to affect its parent instead.
Thank you for your time, Jared