Extrinsic 1364-1

{
  "heartbeat": {
    "blockNumber": 1362,
    "sessionIndex": 22,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x9224916881ff4ae9bf48818e0ab88ccf4bae9ae604a40d48437b4613dbfb19595f4ac30e59463aa7e72f9da0b7f301a47214f19be2fe675c4f74c4830b943187"
}