// put your const config = {
  // ...
  customFields: {
    Product: [
      { name: 'infoUrl', type: 'string' },
      { name: 'downloadable', type: 'boolean' },
      { name: 'shortName', type: 'localeString' },
    ],
    User: [
      { name: 'socialLoginToken', type: 'string', unique: true },
    ],
  },
}code here