Extrinsic 39327-2

{
  "heartbeat": {
    "blockNumber": 39325,
    "sessionIndex": 655,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xc693d403a7f0703f78945e00a40c0f71aec1d3c620b52e13d93b5a34b217f0720d194ff5849569fab74b942cf91a6cca53fa4870a58f42bc5d480048e82f0880"
}