Extrinsic 9319-1

{
  "heartbeat": {
    "blockNumber": 9318,
    "sessionIndex": 155,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x3a22911abde5e27009597fdfe2bb7684b47a972a7c62334ee8c39d7172970132117b343ef00159b906ab0894cfd38fb90adfeb1443e764738868f24ba2d8678f"
}