Extrinsic 179375-1

{
  "heartbeat": {
    "blockNumber": 179373,
    "sessionIndex": 2989,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x2c5acf17591e0952c6c0a1312796c333861dfa93fc4a03a4472077c7e9037d563e3d543beda4996f2de279530b76fb1dcef93b1d27950dcf46d75f3d96c36e85"
}