Extrinsic 7245-1

{
  "heartbeat": {
    "blockNumber": 7244,
    "sessionIndex": 120,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xfc75160da6c058f591325f47f2ada0c7c327e7b2f17ba38f133a33fb1c2a9e604192af0e23273abb1b9574483c262b063b32ddc2c5a94e899ad0860a9e918d84"
}