Extrinsic 177769-1

{
  "heartbeat": {
    "blockNumber": 177767,
    "sessionIndex": 2962,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x28d59dbee7e49c5dddb9582490d8bc04220b252a0833bd8c8a4639cdecca221524696013b335921cfa264e2e65ea3678c20fdd238ba7f66830d72f85232cfb8a"
}