Extrinsic 7348-1

{
  "heartbeat": {
    "blockNumber": 7346,
    "sessionIndex": 122,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x0c6b39a394d78186fdfe98979bf6b58e16cd6e50893cd966f3a6d34d1e54f118283a3c0b0091e1af20f8aa9df397917fbeb67e4133a3927ddec37feffc0f568a"
}