@type t() :: %Inttegro.Chimes.SendChimeRequest{
  custom_data: %{optional(String.t()) => String.t()} | nil,
  email: Inttegro.Chimes.ChimeEmailMessageInput.t() | nil,
  full_message: String.t() | nil,
  message_template:
    Inttegro.MessageTemplates.MessageTemplateReferenceInput.t() | nil,
  purpose: String.t() | nil,
  recipient: Inttegro.Chimes.SendChimeRequestRecipient.t(),
  request_meta: Inttegro.Chimes.SendChimeRequestRequestMeta.t() | nil,
  sender_id: String.t() | nil
}