Extrinsic 74836-1

{
  "heartbeat": {
    "blockNumber": 74834,
    "sessionIndex": 1247,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x28c31c2825da214dd7df47405545d365b20b61bc5cb14752c8f370bd51f1045762136d29016d4c67ff7be84858854ed55ddc70247eb42d4bdd53cab7221ccb88"
}