{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x519ffff000df47e70442518e18c61f48cbbb2b487cbaad891c99d984de7a18bf",
    "signature": "0x60740e218f7e20de61835d5dfc80e7bcdb63c1010129def0d92cfe911ca85a06539064bc6e3629fe9f9784d6aa5515ab2528e4af4294d5adb5060d70226dcc411c",
    "signer": "0x8c224330CB8D15D5E079331dd72832b929FB99eE",
    "userId": "110303461"
  }
}