Extrinsic 16059-1

{
  "heartbeat": {
    "blockNumber": 16057,
    "sessionIndex": 267,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x50f19bece55e4da6c7a5e0d1f78f676d0ca46d0672752b510d3d8ad4084f5c2ff6f585a3c64032737faa712fb67f3cac91dc57a7476c4b95e5ebe9bc1c073881"
}