type: object
properties:
  from:
    type: string
    description: Start Date, e.g., '2017-09-10'
  to:
    type: string
    description: End Date, e.g., '2017-09-10'
  timezone:
    type: string
    description: E.g., Europe/Madrid
  interval:
    description: >
      One of the intervals can be used: today, yesterday, 7_days_ago,
      first_day_of_this_week, 1_month_ago, first_day_of_this_month, 1_year_ago,
      first_day_of_this_year, all_time