To withdraw an unfrozen balance in Stake2.0, users can use this API to retrieve their funds after successfully executing the /wallet/unfreezebalancev2 transaction and waiting for N days, where N is a configurable network parameter. Note: Stake 2.0 supports multiple partial unstakes. Through this API, all unstaked funds that have passed the N-day lock-up period will be withdrawn at one time. Returns Transaction object - JSON object: Unsigned transaction, please refer to the Transaction chapter for the fields contained in it. Since the transaction type is WithdrawExpireUnfreezeContract, the fields contained in raw_data.contract[0].parameter.value in the transaction are as follows: