Extrinsic 7873-1

{
  "heartbeat": {
    "blockNumber": 7872,
    "sessionIndex": 131,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x0e48053001cc7666d34217a302c8d979147c9496f62aee5797b8b60e97a97d3f907b0fc91cfcc4b7cc3518ac4a7b48e0762a5f3e91a7ec63c3f12d027cdfff84"
}