Extrinsic 13447-1

{
  "heartbeat": {
    "blockNumber": 13445,
    "sessionIndex": 224,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xf0ace59ec2786bb43bb0a59af1a6b1a5b66fd243f7bdffad0f1c12559698ac27f2189a5a806f601f4c1e0c226b1d971a54d43ae54a1c2dedfd6906888275c089"
}