Store both Uint8Array and string message id so that we don't have to convert data between the two. See https://github.com/ChainSafe/js-libp2p-gossipsub/pull/274
Store both Uint8Array and string message id so that we don't have to convert data between the two. See https://github.com/ChainSafe/js-libp2p-gossipsub/pull/274