Extrinsic 19631-1

{
  "heartbeat": {
    "blockNumber": 19630,
    "sessionIndex": 327,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xa6398abbf652166e5d009fec852fb2fb9eacccbefc9f5223b27ae7b42aaeee6143cc0a4158ec61a22b17f7c9d0f99ea8d66cea5247eab68a20ba05865258cb86"
}