curl --request GET \
  --url https://xdg-mainnet.gomaestro-api.org/v0/assets/dunes \
  --header 'api-key: <api-key>'

{
  "data": [
    {
      "id": "5228806:44",
      "spaced_name": "JUST•SEND•ITTTT"
    },
    {
      "id": "5228811:6",
      "spaced_name": "MOMMAWEMADEIT"
    },
    {
      "id": "5228827:57",
      "spaced_name": "BOOK•ON•DUNESSS"
    },
    {
      "id": "5228850:19",
      "spaced_name": "TODAY•TOMORROW"
    },
    {
      "id": "5228851:15",
      "spaced_name": "TOMORROW•TODAY"
    },
    {
      "id": "5229366:35",
      "spaced_name": "PEPE•MEME•KING"
    },
    {
      "id": "5244144:12",
      "spaced_name": "DOGECOIN•FIWB"
    }
  ],
  "last_updated": {
    "block_hash": "85bd0d5594a7cd024ee6b3f345ea2e8ca0725a96fe751f5487202064dbb64b1c",
    "block_height": 5251959
  },
  "next_cursor": null
}