JSONObject aceObject = jsonObject.optJSONObject(testUserId);
assertNotNull(aceObject);
assertEquals(0, aceObject.getInt("order"));
String principalString = aceObject.optString("principal");
assertEquals(testUserId, principalString);
JSONArray grantedArray = aceObject.optJSONArray("granted");
assertNotNull(grantedArray);
assertEquals("jcr:read", grantedArray.getString(0));