@type t() :: %ApolloSignal.Types.TopicPerformanceResponse{
  avg_read_time_seconds: number() | nil,
  bounce_rate: number(),
  bounced: integer(),
  click_rate: number(),
  clicked: integer(),
  complained: integer(),
  complaint_rate: number(),
  computed_at: String.t(),
  delivered: integer(),
  delivery_rate: number(),
  open_rate: number(),
  opened: integer(),
  opt_in_count: integer(),
  opt_out_count: integer(),
  read_engaged: integer(),
  read_engagement_rate: number(),
  topic_id: String.t(),
  topic_name: String.t(),
  total_emails: integer(),
  unsubscribe_rate: number(),
  unsubscribed: integer(),
  window: ApolloSignal.Types.MetricsWindowResponse.t()
}