Extrinsic 2469-1

{
  "heartbeat": {
    "blockNumber": 2467,
    "sessionIndex": 41,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xac5681175099a2a128024b9a4d9ea36c60f27a1954666c97e2a95ff3a2ae4259dcd27798f96a2c2a304924c2e91aa01acc2e9f9ad7804f7bf79b2753623e0f80"
}