Extrinsic 12337-1

{
  "heartbeat": {
    "blockNumber": 12335,
    "sessionIndex": 205,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x22a8a67693a80a9cca24dc803fc79904511b38e64e7b521675b5192852609136e9b8c7bea898a122eefb625e0b2dd1742bd6305385cb0b56cd0bd2da428d1d81"
}