Extrinsic 147341-1

{
  "heartbeat": {
    "blockNumber": 147339,
    "sessionIndex": 2455,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xb0fb9924322020a3ed00f820faa7b49971f51ece470d0d51398e143b6033e34709de726a9ac6a96b029726b1bf99284a22412e70293533ba93e4e99b8f8a1581"
}