Extrinsic 6946-1

{
  "heartbeat": {
    "blockNumber": 6944,
    "sessionIndex": 115,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x60ad013c424610efefe5f79b6206d1d61433e3ed8e071359b09c0bff1a4fb6411acfa463ade3ab05d019ae9d4d6e3526b9c83262dd6fdccac05ab50571e6b686"
}