Extrinsic 40481-1

{
  "heartbeat": {
    "blockNumber": 40479,
    "sessionIndex": 674,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xe0383f34ab67a3facd6e4f64216d4b3d55953ca456e46a114ceb58127a8ca31bcaacebdf812d281ebe7cba4dc613a67ffbd2964577cef84ffd5c1394a1e5c084"
}