when there are many payments at same time, because we only has one signer to submit tx to chain, it need waiting previous onchain, and then do next submit.
so we need support multiple signers configure in config.toml, to scale the performace of submit txs.
when there are many payments at same time, because we only has one signer to submit tx to chain, it need waiting previous onchain, and then do next submit.
so we need support multiple signers configure in config.toml, to scale the performace of submit txs.