curl --request GET \
  --url https://toncenter.com/api/v3/nft/items

{
  "address_book": {},
  "metadata": {},
  "nft_items": [
    {
      "address": "<string>",
      "auction_contract_address": "<string>",
      "code_hash": "<string>",
      "collection": {
        "address": "<string>",
        "code_hash": "<string>",
        "collection_content": {},
        "data_hash": "<string>",
        "last_transaction_lt": "0",
        "next_item_index": "<string>",
        "owner_address": "<string>"
      },
      "collection_address": "<string>",
      "content": {},
      "data_hash": "<string>",
      "index": "<string>",
      "init": true,
      "last_transaction_lt": "0",
      "on_sale": true,
      "owner_address": "<string>",
      "real_owner": "<string>",
      "sale_contract_address": "<string>"
    }
  ]
}

{
  "code": 123,
  "error": "<string>"
}