Account
case class Account(account_hash: AccountHash, named_keys: Seq[NamedKey], main_purse: URef, associated_keys: Seq[AssociatedKey], action_thresholds: ActionThresholds)
Account Enttiy class : https://docs.rs/casper-types/1.4.4/casper_types/account/struct.Account.html
trait Serializable
trait Product
trait Equals
class Object
trait Matchable
class Any