Extrinsic 75279-1

{
  "heartbeat": {
    "blockNumber": 75278,
    "sessionIndex": 1254,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x4a997663c00f603bb1b635eec8648f9defd496387ff6aaf27f848eab7acd6e52f6a96c92e40a335d9905ff0abb930e9334d9a0dda9273ddd9e9038a60db51882"
}