Extrinsic 698-1

{
  "heartbeat": {
    "blockNumber": 697,
    "sessionIndex": 11,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x1c0d6409aa8ae9af09c3d1b962c7074ab72dd2460e3b5ac3e65c829d9ab6e5128b7eaadd04ab6eae0e24b460f9b059748ddbeacc980b6abd3080cbe67b899d81"
}