I am trying to unmarshal this API response to a Golang struct.

{
    "0": {
        "article_id": 1,
        "article_inwebshop": 0,
        "article_number": 1111111,
        "article_season": 0,
        "sizeruler": -3,
        "article_freefield2": null,
        "article_manufacturer": null,
        "article_artfabr": null,
        "article_freefield1": "name here",
        "article_color": null,
        "article_subgroup": "name here",
        "article_group": "name here",
        "article_price_web": "",
        "article_additional_info": "",
        "article_description": "name here",
        "article_creation_date": "2016-09-30",
        "article_basepurprice": "0.00",
        "article_baseprice": "0.00",
        "article_outlet": 0,
        "article_discount": "",
        "article_memo": "name here",
        "article_supplier": null,
        "article_price_web_discount": "",
        "article_homepage": 0,
        "article_weight": "1.60",
        "article_run_out": 0,
        "article_metakeywords": "name here",
        "article_metadescription": "name here",
        "article_metatitle": "name here",
        "article_price_wholesale": "0.00",
        "article_subsubgroup": "name here",
        "salesunit": 1,
        "article_deposit": "0.00",
        "deliverytime": null,
        "article_taxrate": "21.00",
        "article_group_extra": [],
        "article_is_composed": "false",
        "fields": {
            "aantal_flessen": "",
            "alcoholpercentage": "40%",
            "beschikbaarheid": "",
            "bottelaar": "name here",
            "distillery_merk": "name here",
            "druivensoort": "",
            "gebotteld": "",
            "gedistilleerd": "",
            "inhoudsmaat": "1 liter",
            "land": "",
            "leeftijd": "no-age-statement",
            "oogstjaar": "",
            "regio": "name here",
            "serie": "",
            "vatnummer": "",
            "vattype": "name here",
            "verpakking": "",
            "wijnhuis_merk": "",
            "article_memo_en": "",
            "datum_nieuw_binnen": "",
            "doos_prijs": "",
            "add_informatie": "",
            "test": "",
            "maximum_aantal_per_klant": ""
        },
        "virtual_articles": [],
        "virtual_article_parents": [],
        "images": [
            {
                "image_description": "Shan_Classic",
                "image_file": "Shan_Classic.jpg",
                "image_order": 1,
                "image_link": "Shan_Classic.jpg",
                "image_checksum": "234234234"
            },
            {
                "image_description": "Anto_Classic",
                "image_file": "Anto_Classic.jpg",
                "image_order": 2,
                "image_link": "Anto_Classic.jpg",
                "image_checksum": "234234234"
            }
        ],
        "sizes": [
            {
                "position": 1,
                "description": null,
                "stock": 0,
                "salepricedelta": "0.00",
                "purpricedelta": "0.00"
            }
        ],
        "barcodes": [
            {
                "position": 1,
                "barcode": "123123123"
            },
            {
                "position": 1,
                "barcode": "123123123"
            }
        ],
        "article_crossell": [],
        "article_upsell": [],
        "article_composed": [],
        "article_actions": []
    },
}

I tried various things, but I am unable to get it working. My latest code is:

var items []map[string]types.Synchronize
err = json.Unmarshal(body, &items)
  if err != nil {
    fmt.Println(err)
    return
}

But that results in an “json: cannot unmarshal object into Go value of type []map[string]types.Synchronize” error.

Can anyone explain to me what I am doing wrong?