Extrinsic 25479-1

{
  "heartbeat": {
    "blockNumber": 25477,
    "sessionIndex": 424,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x480f7125eba8cecba01af55ba3fc4cdb0edcc0e03f9355846aedeeb85314e37e67fbde6d4f17488a9c6b16609bf68cd05754ddce3fd89aa28c9cbd5b23d7588b"
}