gistfile1.txt

function uib_user_field_attach_view_alter(&$output, $context) {
  $foobar = array(
    '#theme' => 'field',
    '#field_name' => 'field_uib_last_name',
    '#field_type' => 'text',
    '#title' => 'My very last name',
    '#label_display' => 'inline',
    '#bundle' => 'user',
    array(
      '#markup' => 'Foobar'
    ),
    '#items' => array(array()),
  );
  $output['field_uib_last_name'] = $foobar;

  dpm($output);
  dpm($context, 'context');
}