Extrinsic 388162-1

{
  "heartbeat": {
    "blockNumber": 388161,
    "sessionIndex": 6469,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xf6f6afce9fdc24ac5fe1a0b089bcd4595f82fe36e2bf1b655881b33ba7678941376e066990bb580815737b2bc08f5ddf0d586d6c4cb4379c5b8e20a94bfe8288"
}