0x47e1da2a?0x47e1da2a is the function selector for executeBatch(address[],uint256[],bytes[]). Runs several calls from a smart account.
When a transaction's data begins with 0x47e1da2a, it is calling executeBatch. The selector is the first four bytes of the keccak-256 hash of the signature executeBatch(address[],uint256[],bytes[]), which is how wallets and explorers work out which function a payload is for.