Extrinsic 178248-1

{
  "heartbeat": {
    "blockNumber": 178246,
    "sessionIndex": 2970,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x487310f0bcdcd4ac28b3e3d2f1495756495f277af3d8b4106739d00d33a0a7052572cecd615a2ef0bfd56a11a3ae4e4619727b646803e4e05d7f06b0c020e584"
}