Extrinsic 2311-1

{
  "heartbeat": {
    "blockNumber": 2310,
    "sessionIndex": 38,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x2cdeede18f114c26356af6955eb5f9c0671e6642dd5002d6280f1930b92101314d61e09aa25adb3f851937d3c905d5466780875991f98e98cd2520e2cc269a8e"
}