@type t() :: %Notifique.OpenApi.Model.NtfConversionsPostV1ConversionsRequest{
  currency: String.t() | nil,
  metadata: %{optional(String.t()) => any()} | nil,
  msg_id: String.t(),
  order_id: String.t(),
  value: number() | nil,
  valueCents: integer() | nil
}