Extrinsic 39078-1

{
  "heartbeat": {
    "blockNumber": 39076,
    "sessionIndex": 651,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x7cd7071a34b0cca9108257a3464b5573916c427299577fc09a17c70a530dbe659263f1fc81a64f681329bc49b1d8c54b1930400a9f00de56c7d5c0945bf9f189"
}