Extrinsic 66391-1

{
  "heartbeat": {
    "blockNumber": 66390,
    "sessionIndex": 1106,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xc8ced635ae8fbb76cd5ff5144f5ddac5888af58b99fb27b7fb4375eab91a89368ba34c30d33ab2f60ccb639eb6a76dd90028d7a956879fc197a238e903c0498d"
}