Extrinsic 40705-1

{
  "heartbeat": {
    "blockNumber": 40703,
    "sessionIndex": 678,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x2043192fd983830ffaafeaabea315860e9c57eb276b9d5bbebcd4f3952c957408225487a9f4ab8640e0bf449a31c602cc8c19f3a5f98e08a8d37b3df918e2681"
}