Extrinsic 173071-1

{
  "heartbeat": {
    "blockNumber": 173069,
    "sessionIndex": 2884,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x76b387c7d03de05d4d4dbe9af9dc485d9be644be125c20f5c37d2b5e58e3c438e94a0a5c0dc8380b473579e24cdc0d847785f0e5e21b38efef2b2d0ea9dedc8e"
}