0xb88d4fde?0xb88d4fde is the function selector for safeTransferFrom(address,address,uint256,bytes). Transfers an NFT with extra data.
When a transaction's data begins with 0xb88d4fde, it is calling safeTransferFrom. The selector is the first four bytes of the keccak-256 hash of the signature safeTransferFrom(address,address,uint256,bytes), which is how wallets and explorers work out which function a payload is for.