Extrinsic 2376-1

{
  "heartbeat": {
    "blockNumber": 2375,
    "sessionIndex": 39,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x6651d2020a127f3b2ec110769f648d960b97ad1281f3e56c8764e1d3c0272f60fa2654d7f5e2bf9e81fb4694ad7aebb6773a8efc6ee0e55d0aedfbf74f79828e"
}