{
   "epochs": [ {
      "calculation_time": "13366235058919516",
      "config_version": 0,
      "model_version": "0",
      "padded_top_topics_start_index": 0,
      "taxonomy_version": 0,
      "top_topics_and_observing_domains": [  ]
   }, {
      "calculation_time": "13366900156409141",
      "config_version": 0,
      "model_version": "0",
      "padded_top_topics_start_index": 0,
      "taxonomy_version": 0,
      "top_topics_and_observing_domains": [  ]
   } ],
   "hex_encoded_hmac_key": "252679BA63151365718E5DB9AA25D21751EA07B591E9029EC9F688EA7BA2FD86",
   "next_scheduled_calculation_time": "13367504956409400"
}
