Extrinsic 19108-1

{
  "heartbeat": {
    "blockNumber": 19107,
    "sessionIndex": 318,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xb69827cd81844e39d5edfdb06bc414269a9df0a10cd227208cb5eb87b2ac932a9add23798e776b6c266ee19b2c4f5aec2588db8a44bf159e30d62fbaf77dd58f"
}