curl --request GET \
  --url https://api.{tenant}.getomneo.com/api/v3/automations/{automation}/actions/{action}

{
  "data": {
    "id": 123,
    "uuid": "<string>",
    "references_id": "<string>",
    "name": "<string>",
    "sort_order": 123,
    "description": "<string>",
    "notes": "<string>",
    "arguments": [
      {
        "name": "<string>",
        "value": "<string>",
        "is_dynamic": "<string>"
      }
    ],
    "created_at": "<string>",
    "updated_at": "<string>"
  }
}