FieldsRaven metafieldCreateUpdate example #1

// JavaScript
let hidePage = () => {
  let payload = {
      object_type: 'page',
      object_id: 123,
      namespace: 'seo',
      key: 'hidden',
      value: 1,
      value_type: 'number_integer'
  };
  FieldsRaven.metafieldCreateUpdate(payload).then((res) => {
      if (res.status === 200) { 
          // Do something or not!
      }
  });
}