Extrinsic 9700-1

{
  "heartbeat": {
    "blockNumber": 9699,
    "sessionIndex": 161,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xa281c7aab2d0bf51837ee2cb293a8c08e770ef509eb9598449ec6b083fa5c14950acfdfc4a24da1608da962b596d5e8a3d926965f34dabb71fcd4e57f60cf087"
}