Extrinsic 157338-1

{
  "heartbeat": {
    "blockNumber": 157336,
    "sessionIndex": 2622,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xbec774195af47226fac3e65b9c473e5785e78b3c2afc9f7fa1651b337a64843b046721c14dafca9b146764a6cea837e1a2de46af19cf6700a9a1dbedadafdc8d"
}