Extrinsic 39435-1

{
  "heartbeat": {
    "blockNumber": 39433,
    "sessionIndex": 657,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xd624994d8791880052e24233af243d6e0941771780cf71f51207202aa31cf2210293c641ef24ffbd20ed8d69c5811fdb51c48ef1867c93aa55702b5eb4035d8a"
}