curl --request GET \
  --url https://tenant.chronosphere.io/api/v1/config/classic-dashboards/{slug} \
  --header 'API-Token: <api-key>'

{
  "classic_dashboard": {
    "name": "<string>",
    "bucket_slug": "<string>",
    "collection": {
      "slug": "<string>",
      "type": "SIMPLE"
    },
    "collection_slug": "<string>",
    "created_at": "2023-11-07T05:31:56Z",
    "dashboard_json": "<string>",
    "slug": "<string>",
    "updated_at": "2023-11-07T05:31:56Z"
  }
}