Extrinsic 76480-1

{
  "heartbeat": {
    "blockNumber": 76479,
    "sessionIndex": 1274,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x548b027e77b557d8c7e01ef3980c3f0bb2041161c408cd4814d436325a466d6d8f1046e19dfa0e6bce6431ab8858789a2a5fe98042e3be0cce637e2ff5fe7a81"
}