Extrinsic 30276-2

{
  "heartbeat": {
    "blockNumber": 30274,
    "sessionIndex": 504,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xa840231298c54937b4f62cb60b85e7b8888f4d622cefed9ab17fdd38b33f550cd49f49b1dd38adfcc07fe4d9ba8d439db7bd19759382897f12bfc2d05075808b"
}