data.json

{
  "fields": [{
      "fieldId": "code", 
      "groupId": "general", 
      "rendererId": "product",
      "isEditable": true,
      "fi_FI.label": "Kivesjärven Siwa",
      "fieldType": "STRING"
    }, {
      "fieldId": "new_enum",
      "groupId": "something",
      "renderer": "apples",
      "fieldType": "OPTIONS",
      "options": [1, 2, 3]
    },
    {
      "fieldId": "enum",
      "groupId": "something",
      "name": "new group"
    }
  ],
  "deleted": [
    {
      "fieldId": "enum",
      "groupId": "broken",
      "renderer": "apples"
    }
  ]
}