ContractsTechnical ReferenceAtlas v1.5TypesDAppOperationOn this pageSolidity API DAPP_TYPEHASH bytes32 DAPP_TYPEHASH DAPP_OP_LENGTH uint256 DAPP_OP_LENGTH DAppOperation struct DAppOperation { address from; address to; uint256 nonce; uint256 deadline; address control; address bundler; bytes32 userOpHash; bytes32 callChainHash; bytes signature;}