Extrinsic 64483-1

{
  "heartbeat": {
    "blockNumber": 64482,
    "sessionIndex": 1074,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x3a474197b75ef1b5876274082523617c696ac468bd4b820d456bf3ac85db581a940f3f32902f676c010a71f1b38dae5cb4dcb8140077510e8ecc9e8bbd285580"
}