Extrinsic 17484-1

{
  "heartbeat": {
    "blockNumber": 17482,
    "sessionIndex": 291,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x786a116a0aeaac0d5a6c5b72e7bf634ecffa57b12354a14a2afd40d74c3749346a3252d02524dae8f501fc3f8d9d668950a3dfa36657471dcd62ec9f664fb488"
}