Extrinsic 2675-2

{
  "heartbeat": {
    "blockNumber": 2674,
    "sessionIndex": 44,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x4e53ecb67333e2563cfe9212db9831c6b36947b8568836e61362403223bcc01f7f0d3392aa4753b41557cbacfc1bb8d286ecb313d63c627d1b5e179bf0230c8f"
}