Extrinsic 31346-1

{
  "heartbeat": {
    "blockNumber": 31345,
    "sessionIndex": 522,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xda0d47fb60fc384b39fcdca20aa83db735a242a2ee07708284edea88c55be760c593f32b786b705951ddcda50c98b1b22f8784ea903d27ed80e94f738671da8c"
}