Extrinsic 171758-2

{
  "heartbeat": {
    "blockNumber": 171756,
    "sessionIndex": 2862,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x6e69a4d90bfbfa12004d293ad7f7bce5097a63b5358e1809b5b2c870e100d8281b046041b7ef9aeaf91d761f1ba3a93243ca6bdb5d86a003e368e4b07b9b7f82"
}