curl --request GET \
  --url https://api.mixpeek.com/v1/namespaces

{
  "results": [
    {
      "namespace_id": "<string>",
      "namespace_name": "spotify_playlists_dev",
      "description": "<string>",
      "feature_extractors": [
        {
          "feature_extractor_name": "<string>",
          "version": "<string>"
        }
      ],
      "payload_indexes": [
        {
          "field_name": "<string>",
          "type": "keyword",
          "field_schema": {
            "type": "text",
            "tokenizer": "word",
            "min_token_len": 2,
            "max_token_len": 15,
            "lowercase": true
          }
        }
      ],
      "status": "PENDING",
      "error_details": "<string>",
      "task_id": "<string>"
    }
  ],
  "pagination": {
    "total": 123,
    "page": 123,
    "page_size": 123,
    "total_pages": 123,
    "next_page": "<string>",
    "previous_page": "<string>"
  }
}