Extrinsic 178355-1

{
  "heartbeat": {
    "blockNumber": 178353,
    "sessionIndex": 2972,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xae3013351a561cf5e1addb27a0d6543323fc7696bfd3b1994327056f2717fc5f86a8b40d28130cdac9f8163019d5baa504e32caa065f34fe8c8e40b3a6e30a8d"
}