account: AugmentedQuery<ApiType, (arg1: AccountId32 | string | Uint8Array, arg2: u32 | AnyNumber | Uint8Array, arg3: u32 | AnyNumber | Uint8Array) => Observable<Option<Null>>, [AccountId32, u32, u32]> & QueryableStorageEntry<ApiType, [AccountId32, u32, u32]>;