Extrinsic 189547-1

{
  "heartbeat": {
    "blockNumber": 189545,
    "sessionIndex": 3159,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xbc93410f9c00abe5294e3bded9ff24218a9207c52837935b933cf5473ab9560756e99b52aa920d81ac1579b6a34f927ce6978aad99a1f6aabe28ad05c55ef987"
}