Extrinsic 28896-1

{
  "heartbeat": {
    "blockNumber": 28895,
    "sessionIndex": 481,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x8efe4872feeeb0721333e8a47dd111ad6ad3d3d7f60b64cf407ea1ce276c8475126ad623d8f41b41cc6a3e0d74ec52123a581e7611f70122d10499ccda055b8c"
}