Extrinsic 7609-1

{
  "heartbeat": {
    "blockNumber": 7607,
    "sessionIndex": 126,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x42b0ec5f9e04fe5b7c480afe36c1de4935be5074d6caa1823f0c94dec4879319bf9d571ffce71d3e13a090a452f1718d7a57c857dd5e09d0ed7d0e20c15af988"
}