Extrinsic 28960-1

{
  "heartbeat": {
    "blockNumber": 28958,
    "sessionIndex": 482,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x92d6389809a3e633a3a95e1ab3a8432b50bf2415301451d1dcfac94caf4fa70707ba32fed766573eb68e8f59290abda4d5892f6c7bb8942b443e9641127d4482"
}