Extrinsic 157549-1

{
  "heartbeat": {
    "blockNumber": 157547,
    "sessionIndex": 2625,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x7efcea9d9dd9f42e51993e270511ad931714f0d25047d96174fdbd9f7b2bb90196d9125c5989825093261b46ab2ce828acd4f41af441fdfe4b1acffe4419678b"
}