Extrinsic 55780-1

{
  "heartbeat": {
    "blockNumber": 55779,
    "sessionIndex": 929,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xb02d86104a367408931c7c41fa6bd0bac537068ec101fa6dc8e072f046bbfa0c4b8c06668ac86740162b217c97df19b008b9c62b7f8c5db4732389e5317df58d"
}