Extrinsic 17410-1

{
  "heartbeat": {
    "blockNumber": 17409,
    "sessionIndex": 290,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xe611d83d43b0c65773c955cc250f4fe8f51be641404a8723e60eb3b768fcf945a49d3e69ace1e0bfd7b954bd02aa296f364b02003e613d593a10500f9afab78c"
}