Extrinsic 9263-1

{
  "heartbeat": {
    "blockNumber": 9262,
    "sessionIndex": 154,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xd8bd45e4d3dba52904d8066c3a3ceade089b0fb046968a19b1146e944081861ed836494a4d64e6c77cfa98787cb1dcd039a75552314ca894858bc109db780e8d"
}