Extrinsic 7887-1

{
  "heartbeat": {
    "blockNumber": 7886,
    "sessionIndex": 131,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x283602f29debdc6f700c1aba18f9122a2d88aef9e462c4e83eda77cf19584f4ca4b876225f27655c0ac34ad694f8c92f4e7beb7e5104279b5ea1ea1b5e337682"
}