Extrinsic 43701-1

{
  "heartbeat": {
    "blockNumber": 43699,
    "sessionIndex": 728,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xc039f4a76e12ac19266028c91b0cdda2d2a1fbf4739aacdc27f3f3ea32c4fc62bbccfb7b098795071fd5710efdc21d4f729550c5c871e9a2ba7d4847cccb0280"
}