Extrinsic 30377-1

{
  "heartbeat": {
    "blockNumber": 30375,
    "sessionIndex": 506,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xe06c25d96dc4cf266aa4e84393c81f1e00e3b9b92520f8d6eff4f0dca9128d4e0eb7e551bf49e97cc19b62239f89855b9c5bcb4c8eb26a390400496d8b131986"
}