{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57937",
    "entityType": "User",
    "nonce": "0x10d7e06e8e170c4cfbe03347d9d9a40ad43f8a5394427f49e952ea4ee427d2d4",
    "signature": "0xa145330f935c72c1de913c8b5bf3ab6b149eda7896a7adbd8c87d0b6c72155c1647d7bf35a7b4b66d66c96e738c3a3d61de85dfae4196aa8eeaf8e1e6b6518b61b",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}