@type t() :: %DocuSign.Model.PurchasedEnvelopesInformation{
  amount: String.t() | nil,
  appName: String.t() | nil,
  currencyCode: String.t() | nil,
  platform: String.t() | nil,
  productId: String.t() | nil,
  quantity: String.t() | nil,
  receiptData: String.t() | nil,
  storeName: String.t() | nil,
  transactionId: String.t() | nil
}