Extrinsic 22488-1

{
  "heartbeat": {
    "blockNumber": 22487,
    "sessionIndex": 374,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x78c3fbc69be9f38bb8c334ab0169cb4daf8901c54a71010c1b101678facc6317894a7358724f06e924ccac791d025b20e6e7c27c168b3b0f278fbbfac5d4da85"
}