{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2cdfff543d7c4ba8880f18b41af57eb7b78a311323404a944e9e1ea1cb602043",
    "signature": "0x1e123044b7b228650eb09178311afe6549bd46a22a9bbbe3601b8698e7ad822914ca8cc7bd12feb6edf88ab5308c6c211e481e1a61bd26742f70117e781bfeff1c",
    "signer": "0xd163667714DD20a7de7d09005b0A820B1b11aaa2",
    "userId": "841706200"
  }
}