{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x459552e7e2e768422986dd3c499ee9540c3225e9ca16e7363030a428ad8537bc",
    "signature": "0x6378f8f8d75bb2f5a3893f2a6b8ab95cf51a22146feb3257c51e86a384f1114215b42b15f85854f074b4f72cad623d53af882f6f3452a0d78e1fef341f8459c71c",
    "signer": "0xC0d2d31EE9CC68A56e11FD4701c0C34EA9B436D8",
    "userId": "899945423"
  }
}