Extrinsic 6969-1

{
  "heartbeat": {
    "blockNumber": 6968,
    "sessionIndex": 116,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xc8da015e84c3f7647eafb65c97a2d5439ca7d2c6c0c36f938061cdcf851e545cbc7e73638f9219159fb61600d369c9662b0210761817e556012b36213de47c81"
}