Extrinsic 16359-1

{
  "heartbeat": {
    "blockNumber": 16358,
    "sessionIndex": 272,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xea78eb72192695decb371ca060a6cdf2dde2d0c88a5f2f0e9ec01eab0f841305ff13399fd66a32500cf5d7f611c3f6c6739eabca881b8c3ace09492612d04e8b"
}