{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x7e847eb2bfdc35c042b60c96f1c775a48cdcf8fa1427728902cc7099f24589ad",
    "signature": "0x2e8b7958641c628f2dc28313b43aa5414061dff1f901c3f5023315bdfb91a1f17be37c1cb47f7a357d45160be42d9316ff331d097122e9bc80e9efdbd4126deb1c",
    "signer": "0xa4A8a4853051b18e0f0f777693Ce34CF4bCe9385",
    "userId": "634886384"
  }
}