{
  "data": {
    "metafields": [
      {
        "key": "myKey",
        "value": "myValue",
        "type": "single_line_text_field",
        "namespace": "app--1234567",
        "productId": "gid://shopify/Product/20995642",
        "description": null,
        "jsonValue": "myValue",
        "createdAt": "2025-01-28T20:52:51Z",
        "updatedAt": "2025-01-28T20:52:51Z"
      }
    ],
    "userErrors": []
  }
}