{
  "user_id": {
    "type": "user-id",
    "title": "Analyzing User",
    "required": true,
    "default": 12960671
  },
  "period": {
    "type": "time-period",
    "title": "Period",
    "required": true,
    "enums": ["past_1_year", "past_3_years", "all_times"],
    "default": "all_times"
  }
}