Extrinsic 17735-1

{
  "heartbeat": {
    "blockNumber": 17733,
    "sessionIndex": 295,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x8eefeb0b3ed19ab8ae58eda5d7b1470a85b393db1ff24ba4b66e72a49e59133d3fe420372c17e1e13592b92c526015e789117654e0bdba5d6de9b2e55086818c"
}