Extrinsic 68256-1

{
  "heartbeat": {
    "blockNumber": 68255,
    "sessionIndex": 1137,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x9240f91325070f22ee043e6ebd98fb001f1c4431f0dac60e8d81b17dc44349442546503a3fac214ed818e32333267bac4fd826cb85484d27fec7ff20f377de8b"
}