Extrinsic 178281-1

{
  "heartbeat": {
    "blockNumber": 178279,
    "sessionIndex": 2971,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x526db0add7116f337b6ed2f8683fbcb870958ca83c0e0885b8d4d3440f128f2778b202cee99203f1c490d1eaf058bdb779e69d887b41305d2380cf89af99b083"
}