Extrinsic 30254-1

{
  "heartbeat": {
    "blockNumber": 30252,
    "sessionIndex": 504,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x3cfa0e6f763cb49d1fe340ec53f53f85e27e24c3aeec28fb47f06e9d9c25e449574b85561aee305e53ea7e38b004888a59b03d5cab9d8b315427f9a4b62a4387"
}