Extrinsic 179325-2

{
  "heartbeat": {
    "blockNumber": 179324,
    "sessionIndex": 2988,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x6ea9f244019043b60f19a9a03c8fe4739cfe401009345215795c00e14bdcf378c6654168caf38c4c50923231042f7372b061f9b22dceaba376d0c9adac520a87"
}