query delegateChangeds($block: Block_height, $where: DelegateChanged_filter, $orderBy: DelegateChanged_orderBy, $orderDirection: OrderDirection, $first: Int, $skip: Int){
    delegateChangeds(block: $block, where: $where, orderBy: $orderBy, orderDirection: $orderDirection, first: $first, skip: $skip){
        id
        delegator
        fromDelegate
        toDelegate
        blockNumber
        blockTimestamp
        transactionHash
    }
}