Extrinsic 47374-1

{
  "heartbeat": {
    "blockNumber": 47372,
    "sessionIndex": 789,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xcecdf86cdbf1c9d276d0414e5507d4fd4795c4346b4984c1b133be04a5c6d42d390efa2906da0bde63b795177e8e0ee5011400f68096459e78f779d72ca20888"
}