Extrinsic 174266-1

{
  "heartbeat": {
    "blockNumber": 174265,
    "sessionIndex": 2904,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x80cbca54d4d247b9639c5ef4c164e07cfeb626713048c6062cec468b89ef835eddaeadf052d130bc0945f75f1c92e59351b3a9d4a088c96ace62f3453c1fa78d"
}