Extrinsic 19069-1

{
  "heartbeat": {
    "blockNumber": 19067,
    "sessionIndex": 317,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x7e16f61c2b3d90450fda3449ff8e8862ad57c602c532f7a326f14d3ddd2e8001ce1ceebb18ca844b35867a1dcb411dd8704600a6e3c2614d7fcdf02de1471986"
}