app.js

var app;
app = angular.module('app',[]);
app.constant('endpoint', 'http://api.example.com');

orgs_service.js

var app;
app = angular.module('service.orgs',[]);
app.service('orgs', function($http, $filter){
  var api;
  api = {};
  api.collection = [];
  api.fetch = function (link) {
    return $http.get(link).then(function(res){
      var currentCollection = [];
      angular.forEach(res.data.collection, function(item){
        current = $filter('filter')(api.collection, {uuid: item.uuid});
        if(current){
          current = item;
        }else{
          api.collection.push(item);
        }
        currentCollection.push(item);
      });
      return currentCollection;
    });
  }
  return api;
})

user_service.js

var app;
app = angular.module('service.user',[]);
app.service('user', function($http){
  var api;
  api = {};
  api.object = {};
  api._links = {};
  api.fetch = function(uuid) {
    var userPromise;
    userPromise = $http.get(endpoint + '/users' + uuid).then(function(res){
      api.object = res.data.subjcet;
      api._links = res.data._links;
      orgs.fetch(api.links.orgs).then(function(res){
        api.object.collecton = res;
      });
    });
    return $q.all([userPromise, orgsPromise])
  };
  return api;
});