Extrinsic 74710-1

{
  "heartbeat": {
    "blockNumber": 74708,
    "sessionIndex": 1245,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x30dfa5a046d37402d97e10f06149fbc53edba3d3250ac5a1e3c35b9bcb51c3632223a15f17e98f3a99e1489b156817f640b34e01d282fb0c6848e7039be9a68c"
}