respond: signer=stakin-mpc2.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: Eddsa(BoundedVec { inner: [187, 156, 37, 163, 153, 100, 226, 0, 143, 48, 225, 144, 200, 29, 196, 102, 141, 250, 103, 152, 123, 251, 110, 17, 171, 90, 41, 167, 19, 7, 44, 54], witness: NonEmpty(()) }), domain_id: DomainId(1) }