Extrinsic 19360-1

{
  "heartbeat": {
    "blockNumber": 19359,
    "sessionIndex": 322,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xc2cfff5a8a7f6f429a026e3b5bf198b29e52efdc2fa0af529cd399676d315a132a1de4af8e1ace59134abcd499ffb57c59c28650d2f50f0123316c6c67183e83"
}