Extrinsic 37723-1

{
  "heartbeat": {
    "blockNumber": 37721,
    "sessionIndex": 628,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x5649ebbcc6cf814f9922a0422da73a7f24497eb1b0e19e78f813a0b228b1c60f430c3d855c86c3dc548cf4f613a9e3c962a3c69115a8e78e90d2475a8338f881"
}