Extrinsic 26252-1

{
  "heartbeat": {
    "blockNumber": 26251,
    "sessionIndex": 437,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xa67937e925d06c60416bc7e44158a9bdf67c628b0281a483f9664f3f24b2264f7da50f3df3c5c4354cfd9487506a74fb1f6a0d59fb6cf7729e7eb133710fa983"
}