{
   "epochs": [ {
      "calculation_time": "13366642442811390",
      "config_version": 0,
      "model_version": "0",
      "padded_top_topics_start_index": 0,
      "taxonomy_version": 0,
      "top_topics_and_observing_domains": [  ]
   }, {
      "calculation_time": "13367303233691104",
      "config_version": 0,
      "model_version": "0",
      "padded_top_topics_start_index": 0,
      "taxonomy_version": 0,
      "top_topics_and_observing_domains": [  ]
   } ],
   "hex_encoded_hmac_key": "9CA7D9AE5F21DA8FCF6E722B8B130AD9B8EA5F351B0BBBFB5B18C35CC4E28C85",
   "next_scheduled_calculation_time": "13367908033691815"
}
