Extrinsic 13541-1

{
  "heartbeat": {
    "blockNumber": 13539,
    "sessionIndex": 225,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x3e3724c4562ded4fb921f2c780391440d14a6b91f628b94ff4bbd2d7a031395144ecbb439ae8ecd052f7875844737dfef9a63217f43e6de4df72cf0f79a64882"
}