@type t() :: %LINE.Bot.Insight.Model.GetMessageEventResponseOverview{
  delivered: integer() | nil,
  requestId: String.t() | nil,
  timestamp: integer() | nil,
  uniqueClick: integer() | nil,
  uniqueImpression: integer() | nil,
  uniqueMediaPlayed: integer() | nil,
  uniqueMediaPlayed100Percent: integer() | nil
}