https://www.dynamic.xyz/docs/kotlin/wallets/evm/typed-data-signing
Typed Data Signing (EIP-712) - Dynamic
Sign structured data using EIP-712 with the Dynamic Android SDK.
data signingeipdynamic
https://hauweele.net/~gawen/blog/?tag=data-signing-failed
data signing failed | Gawen's blog
data signingfailedblog