@type t() :: %Inttegro.Chimes.BroadcastCreationDetail{
  content: String.t(),
  created_at: String.t(),
  customer_ids: [String.t()] | nil,
  email: Inttegro.Chimes.ChimeEmailMessage.t() | nil,
  id: String.t(),
  idempotency_key: String.t() | nil,
  purpose: String.t() | nil,
  recipients: [String.t()],
  send_after: String.t(),
  sender_id: String.t()
}