Extrinsic 30408-1

{
  "heartbeat": {
    "blockNumber": 30407,
    "sessionIndex": 506,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xb4b364508530e08d595e051ce7042f4e01f1120b8bdc8a660a614be8496892553f697581ae85871a196077bfb089fceb92ad7b45fce574f011ddafc2cfdc0e87"
}