Extrinsic 175479-1

{
  "heartbeat": {
    "blockNumber": 175477,
    "sessionIndex": 2924,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x227d8d81150fa34ac0e6791008c851259a18fbc2d001f7ff3e47ae34420e3e3967eee2537e9c7066b84da850955e469986674fdf81fa0b46d5e204ddc2578f8e"
}