Extrinsic 26528-1

{
  "heartbeat": {
    "blockNumber": 26526,
    "sessionIndex": 442,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x94202f7c224839e36f0fab226d7274ff04c642c59e38e8da49946ad44a126d119c67bb06ae996c8d5004743be4fac52c380f92e90267c520c268ad8c2fc70f8e"
}