on the client side:
function monitor(){
  dojo.xhr({
    method:"POST",
    url:"/TestCalls",
    headers:{
      "Accept":"message/json",
      "Content-Type":"message/json"
    },
    postData: dojo.toJson([{method:"subscribe", subscribe:"hour"}]),
    handleAs: "json"
  }).addCallback(function(results){
    dojo.forEach(results, dojox.data.restListener);
    monitor();
  });
}
monitor();

in the model file on the server
var hub = require("tunguska/hub");
Model("TestCalls", store, {
  "put": function(object){
    object.groups.forEach(function(group){
      hub.publish("TestCalls/" + group, {event:"put", source:object.id, result: object});
    });
    ...