Extrinsic 30219-1

{
  "heartbeat": {
    "blockNumber": 30217,
    "sessionIndex": 503,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x78a3c2475a14201bc99c9e25eb9a48d633ed204d6a51517150bcfe639ccb811e0a9e0c69866502f5a61f14d855cfe8bf338f982d72f5d6287af9502a2febf186"
}