Extrinsic 173027-1

{
  "heartbeat": {
    "blockNumber": 173025,
    "sessionIndex": 2883,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xdce94db344cecff2e675b2a448306dd77b87c625f143822eb9183307c0b49c7f53f26a3294d16ceccb9627901ed808a7b9bfac60432d29c6f96b173cd7e30a85"
}