Extrinsic 7536-1

{
  "heartbeat": {
    "blockNumber": 7535,
    "sessionIndex": 125,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x7a8b1673c98b9b5c0096c1048ca081afb3edcaa37fc699b4ba762be32ea0eb576a9d21cd92c998d610f3aecbad5f78d027950dfe4090bbc6ac0d97e01660208f"
}