Extrinsic 64656-1

{
  "heartbeat": {
    "blockNumber": 64655,
    "sessionIndex": 1077,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x841178607d3d9287f5a50d9d03fe734e2c06476297515bf7305cfaef6427e1771b407a781ee5867c7e5d65488431c0c747c903b5a321042d9afa48c5973d9086"
}