Extrinsic 34420-1

{
  "heartbeat": {
    "blockNumber": 34419,
    "sessionIndex": 573,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xda179b7d2e15270428d61d8d8539c3a8dc3704e6cc816d6040c51b17c7a2d332b41131d1f409c6c728ef45b30e81ddcab25798fd2af22a3350b42a9bdb30ae88"
}