code: public static Response getReadResponse(App app, ParaObject content) {
  		try (final Metrics.Context context = Metrics.time(app == null ? null : app.getAppid(),
  				RestUtils.class, "crud", "read")) {
  			// app can't modify other apps except itself
  			if (app != null && content != null &&
  					checkImplicitAppPermissions(app, content) && checkIfUserCanModifyObject(app, content)) {
  				return Response.ok(content).build();
  			}
  			return getStatusResponse(Response.Status.NOT_FOUND);
  		}
  	}
docs: Read response as JSON.
  @param app the app object
  @param content the object that was read
  @return status code 200 or 404