Extrinsic 26381-1

{
  "heartbeat": {
    "blockNumber": 26380,
    "sessionIndex": 439,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x508dce0898a97c2b0d2fc589c068dd4c684824ad1689457f88806aaba485ac524c2f913fdbf99b386b2311fa7c65129c035eef46f6f0914a1dd9d6978e227a8a"
}