Solana
programNotification2 额度
Message pushed by the node to a programSubscribe subscriber when a matching account changes; not a callable method.
参数
无需参数（params 数组为空）。
返回值
类型
Object
params.result is { context: { slot }, value: { pubkey, account } }: pubkey is the changed account (base-58), account has the same structure as an account in getAccountInfo ({ lamports, data, owner, executable, rentEpoch, space }). params.subscription is the subscription id.