Extrinsic 25340-1

{
  "heartbeat": {
    "blockNumber": 25338,
    "sessionIndex": 422,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x2a30dda6ad0d550a8fbe3be3673e5e4ace9224efb3b653e187b0971cf932fc68fda18995183665eb0ff5077693575a3263dfa95b5c3de3ac77ea351e54b81585"
}