respond: signer=mpc-lgns.testnet, request=SignatureRequest { tweak: Tweak([219, 168, 68, 128, 219, 92, 120, 51, 228, 10, 113, 57, 202, 242, 53, 98, 58, 18, 212, 95, 163, 11, 30, 1, 27, 145, 164, 100, 243, 254, 131, 159]), payload: Ecdsa(BoundedVec { inner: [230, 219, 109, 20, 53, 102, 120, 217, 11, 240, 142, 179, 50, 40, 44, 173, 215, 250, 223, 57, 179, 150, 40, 148, 118, 200, 48, 49, 133, 145, 86, 225], witness: NonEmpty(()) }), domain_id: DomainId(0) }