{

"metafield": {
  "id": 721389482,
  "namespace": "affiliates",
  "key": "app_key",
  "value": "something new",
  "value_type": "string",
  "description": null,
  "owner_id": 690933842,
  "created_at": "2020-01-14T10:41:30-05:00",
  "updated_at": "2020-01-14T10:43:36-05:00",
  "owner_resource": "shop",
  "admin_graphql_api_id": "gid://shopify/Metafield/721389482"
}

}