mailbox: "0x68797065726c616e650000000000000000000000000000000000000000000000"
merkleTreeHook: "0x726f757465725f706f73745f6469737061746368000000030000000000000000"
validatorAnnounce: "0x68797065726c616e650000000000000000000000000000000000000000000000"