Extrinsic 19295-1

{
  "heartbeat": {
    "blockNumber": 19294,
    "sessionIndex": 321,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x9a96ad0d631024319e75ab56c1f448e74831bf2beedfa99a50acacbab8ed8729a08b98d8746090a5952d99202d04497704e30b19cc077b9cf2ed2a072af6af84"
}