curl --request GET \
  --url https://example.com/v1/api/data/v2/datasources/{DATASET_ID}/schemas/latest \
  --header 'X-DOMO-Developer-Token: <api-key>'

{
  "schema": {
    "columns": [
      {
        "type": "STRING",
        "name": "Example Column",
        "id": "col_1",
        "visible": true,
        "metadata": {
          "colLabel": "Example Column Label",
          "colFormat": "",
          "isEncrypted": false
        }
      }
    ]
  }
}