Extrinsic 147275-1

{
  "heartbeat": {
    "blockNumber": 147274,
    "sessionIndex": 2454,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x10dcbb8abf9f77cc38fcaa53322cb510ad7f00e5527dd0966ee660f6385b513031df06697f6db145dfa6e8f58bbd5a3626d600edb968377aef20b5e6231f6389"
}