Extrinsic 137300-1

{
  "heartbeat": {
    "blockNumber": 137299,
    "sessionIndex": 2288,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xd87c51ee255fa639e8c92a8aa497345e7b43ad4098d342c7710b50d31891e43f569a79bc508fba732b413540804903259967a2763c070b72b900cffce8eae98d"
}