curl --request GET \
  --url https://api-dev.narrative.io/datasets/{dataset_id}/snapshots/{snapshot_id}/column-stats \
  --header 'Authorization: Bearer <token>'

{
  "value": [
    {
      "column_name": "<string>",
      "approx_count_distinct": 123,
      "count_distinct": 123,
      "histogram": {
        "values": {},
        "number_of_bins": 123
      },
      "mean": 123,
      "standard_deviation": 123,
      "completeness": 123,
      "observed_types": {
        "values": {},
        "number_of_bins": 123
      }
    }
  ]
}