Extrinsic 2783-1

{
  "heartbeat": {
    "blockNumber": 2782,
    "sessionIndex": 46,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xfc12b31fef8e4083ed2832d28c3eeeba734d0ed3c6154550f1d739ef061e5d4f495b3a003f8e4053367058ace3be2938812748e9c169d09a801efe4583e77d86"
}