Extrinsic 390168-1

{
  "heartbeat": {
    "blockNumber": 390167,
    "sessionIndex": 6502,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x6825bf05aafdfdf84f69791c557dedc4e9bece17f70342c9f83293843c3c13315628e37592eadfcba06fbce06dae976468df422bcca2f21943250659ff676a8f"
}