Extrinsic 13575-1

{
  "heartbeat": {
    "blockNumber": 13574,
    "sessionIndex": 226,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xea52c0719ea7276ef9c548809152e4376131e2bd5ce9579724cacfcda92bfb07235e82ee19c98efa917b80354fa961e1238d31e6d48780f5b19aef4aee06128b"
}