Extrinsic 173443-1

{
  "heartbeat": {
    "blockNumber": 173442,
    "sessionIndex": 2890,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x3019d184736616a32a98f6112d3bc04807337e348a8dcbe62d9c94d297ac911a35d83348287149b42ad43049971a43dbff1c7885c8b75ebd3e59a4e1c9e8c087"
}