{
   "epochs": [ {
      "calculation_time": "13419566945228068",
      "config_version": 0,
      "model_version": "0",
      "padded_top_topics_start_index": 0,
      "taxonomy_version": 0,
      "top_topics_and_observing_domains": [  ]
   }, {
      "calculation_time": "13421237709387250",
      "config_version": 0,
      "model_version": "0",
      "padded_top_topics_start_index": 0,
      "taxonomy_version": 0,
      "top_topics_and_observing_domains": [  ]
   } ],
   "hex_encoded_hmac_key": "386C8ABE2EC10EE5E315134AAEEB4BC3C2E913CAC96994B4F5DD93A769C40DCF",
   "next_scheduled_calculation_time": "13421842509387267"
}