Extrinsic 44868-1

{
  "heartbeat": {
    "blockNumber": 44866,
    "sessionIndex": 747,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xe474be12a21254f0c69b3dc970275875c1d7f87b03b79e65fda7f3c91de02614a3e166c36b60c291609873366683825ad2672f3f30cc7741511d141c961e6a8c"
}