t() :: %DocuSign.Model.UserSignatures{
  adoptedDateTime: String.t(),
  createdDateTime: String.t(),
  dateStampProperties: DateStampProperties,
  errorDetails: ErrorDetails,
  externalID: String.t(),
  imageType: String.t(),
  initials150ImageId: String.t(),
  initialsImageUri: String.t(),
  isDefault: String.t(),
  phoneticName: String.t(),
  signature150ImageId: String.t(),
  signatureFont: String.t(),
  signatureId: String.t(),
  signatureImageUri: String.t(),
  signatureInitials: String.t(),
  signatureName: String.t(),
  signatureType: String.t(),
  stampFormat: String.t(),
  stampImageUri: String.t(),
  stampSizeMM: String.t(),
  stampType: String.t()
}