Extrinsic 39525-1

{
  "heartbeat": {
    "blockNumber": 39524,
    "sessionIndex": 658,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x4e229c9e51c885d96f795447c7a1ef35480108bed510664c99ae92c2f909dd529e662ace530bef332644c4da1e44ccb5628c53de3d3ac2ee07bbec977ea95e89"
}