Extrinsic 25660-1

{
  "heartbeat": {
    "blockNumber": 25658,
    "sessionIndex": 427,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xca0a4641906e69e5c140ed4703e2a0c911b4fafef25470a7c197cd6a1c2d431d24d1ee5c83c5515fe6669250e70111682672b0e475e899e3f86167c85a26a58b"
}