respond: signer=mpch-01.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: [217, 88, 224, 70, 153, 25, 221, 63, 58, 59, 1, 63, 92, 244, 135, 229, 235, 142, 16, 211, 113, 40, 166, 186, 50, 32, 166, 153, 195, 136, 165, 3], witness: NonEmpty(()) }), domain_id: DomainId(1) }