{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309421",
    "entityType": "User",
    "nonce": "0x3035b5ac036e628c36ffebbdec1c73c71a7ac53ad144b5f3ba2abf4e75db096c",
    "signature": "0xe9d51370e66d69c8558fac78b6cc940adb0837f3e76476cad1630577e4aadc02799bcd060b6560dcd5e0dddff49dd214e905157d42a0c0bb15a9c4cce945b26c1b",
    "signer": "0xE9B9EEdDb579478834256Bd35E42d09cfb754b1d",
    "userId": "281227"
  }
}