{
   "epochs": [ {
      "calculation_time": "13370749165151960",
      "config_version": 0,
      "model_version": "0",
      "padded_top_topics_start_index": 0,
      "taxonomy_version": 0,
      "top_topics_and_observing_domains": [  ]
   }, {
      "calculation_time": "13377849732930261",
      "config_version": 0,
      "model_version": "0",
      "padded_top_topics_start_index": 0,
      "taxonomy_version": 0,
      "top_topics_and_observing_domains": [  ]
   } ],
   "hex_encoded_hmac_key": "13DB785D69877ABB162F82BCD8AE8C7558418CF9F702B5DD95D622D1419FE183",
   "next_scheduled_calculation_time": "13378454532930321"
}
