Extrinsic 6889-1

{
  "heartbeat": {
    "blockNumber": 6887,
    "sessionIndex": 114,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xae10ab41c95de8ab2c9996224014dd8a699db95300cc2d54ff84305a5c50c21f2ba2e73ac169ae8882629734863b00abfbe72f313450bbca2fe25d2daefa6f86"
}