Extrinsic 18099-1

{
  "heartbeat": {
    "blockNumber": 18098,
    "sessionIndex": 301,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xc6a80d8a3f04df82fe67e4293cdc971b55d3ac28d99fd97f0a7dfd4d30d8f60b41be20fa1a7191c69d69b770d41dd5a1a38b586fe56296cbe0339d168a07818f"
}