Extrinsic 6273-1

{
  "heartbeat": {
    "blockNumber": 6271,
    "sessionIndex": 104,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xf8947c736818b152a8b249179765b5f695fe7fdce29554710eb33d0d2837e12d9cbadc2dff39661a28f20fa29a644c393c5899d80824012071427a6efcaeff8c"
}