{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7498",
    "entityType": "User",
    "nonce": "0x188869694a48ea644b355398543681c6d14b3349a6afce3c53decea4d52cad54",
    "signature": "0xaaa65c6cd19f2aa4b8fea35af9b9341a459a7be910bd14ee10f11f8e0773eb58683e7163fc6166eacf64f42a89b27f84cbcd7ec5109423512e793717a66ac3511c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}