Extrinsic 37759-1

{
  "heartbeat": {
    "blockNumber": 37757,
    "sessionIndex": 629,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xbc9d8a6294d16ed2bf50ee5b522fffd49609f12d6f9192f71533370a3e246336d9c8c6c28b188fa32170facda821b7e22cfb6a9bca0fbdb59266067045100381"
}