Extrinsic 27728-1

{
  "heartbeat": {
    "blockNumber": 27727,
    "sessionIndex": 462,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xbe321c7ef0dedcaeab769aa642950983db0cd962c19e8f8f12438d11fc8ec45987542beb6b8e3eba22e44e5b6cd94fc8b73067585c15edb9b97b68fd0f5f6a8d"
}