registry.gm 合约 概览 操作 (13) 结构体 (21) 表 (4) 应用二进制接口 结构体 (21) withdraw withdraw中的操作参数 { "name": "withdraw", "base": "", "fields": [ { "name": "account", "type": "name" }, { "name": "quantity", "type": "asset" } ] }