Extrinsic 7957-1

{
  "heartbeat": {
    "blockNumber": 7955,
    "sessionIndex": 132,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x36bea8aecb1fd889330442ea80cb5e56d6844cb906529ff420ea939bb92894250c9b1b05828051efdc8297c6dd05f448ad5cc4f7ea204e150b49e39c52269f8b"
}