Extrinsic 25545-1

{
  "heartbeat": {
    "blockNumber": 25543,
    "sessionIndex": 425,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x6a0e948d999549515a2761be5f737b664df742dfdbb4551514041d630f92b60e331176bff82ae74c646a1d1dd398becf00e6a931e9dd1affa70df67ac72ca282"
}