Make sure to use date objects everywhere where dealing with dates

src/services/user.js

@@ -1,5 +1,6 @@
 import AbstractService from './abstractService'
 import UserModel from '../models/user'
+import moment from 'moment'
 
 export default class UserService extends AbstractService {
 	constructor() {
@@ -7,7 +8,13 @@ export default class UserService extends AbstractService {
 			getAll: '/users'
 		})
 	}
-	
+
+	processModel(model) {
+		model.created = moment(model.created).toISOString()
+		model.updated = moment(model.updated).toISOString()
+		return model
+	}
+
 	modelFactory(data) {
 		return new UserModel(data)
 	}