Extrinsic 16069-1

{
  "heartbeat": {
    "blockNumber": 16067,
    "sessionIndex": 267,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x66b5aaf16581eceea0a02984e276cecb4c96e82973f83b4c1a07d600b777b46b2b109926efd15ad3d231e0c66e287b88a35ac81a31cb63d113af646f90393181"
}