respond: signer=natsai-mpc.near, request=SignatureRequest { tweak: Tweak([179, 110, 157, 20, 139, 218, 96, 194, 234, 186, 36, 56, 139, 123, 245, 253, 46, 243, 99, 181, 87, 116, 107, 201, 166, 218, 182, 194, 251, 99, 132, 245]), payload: Ecdsa(BoundedVec { inner: [160, 97, 144, 163, 124, 104, 89, 95, 46, 4, 9, 233, 205, 239, 228, 183, 237, 30, 219, 204, 67, 159, 185, 201, 131, 88, 36, 160, 85, 150, 75, 127], witness: NonEmpty(()) }), domain_id: DomainId(0) }