https://dev-docs.dcentwallet.com/dcent-biometric-wallet-for-pc/dcent-web-connector/api/sign/signmessage
signMessage | DCENT Developer Guide
Signs an arbitrary message. Supported on the Ethereum family, Kaia, Solana, Stellar, and Polkadot parachains — not on the non-EVM Conflux and VeChain families.
developer guidesignmessage