Meta Transactions are transactions whose data is created and signed by one person and executed by another trusted party(Relayer) who pays the gas fees. Relayers are responsible for signing valid transactions with this information and sending them to the network, paying for the gas cost. A base contract preserves the identity of the user that originally requested the transaction. In this way, users can interact directly with smart contracts without needing to have a wallet or own tokens. In order to support meta transactions in your application, you need the Biconomy Relayers.