Extrinsic 694-1

{
  "heartbeat": {
    "blockNumber": 693,
    "sessionIndex": 11,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x3096f0693a112cf582387d850741a9a286873d48c767a45bc135dc11482a456f7e9be7bab97e2fbbd87444a803a4275a9932765cdb3718cf59ff698e513cec88"
}