{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345493",
    "entityType": "User",
    "nonce": "0x6f7002c4058d21b61ad8e7ec52f5dc6bf4a5e869f4af89118e57fff40c8272f7",
    "signature": "0xfd8d26d618b43ff5fa7ee779484c76516735821d87bf44193298eedd4a5149935db84086debd0c2202ae8104060d79ecf28c8b47d9466fe1b7b0620932cab5561b",
    "signer": "0x22Fc85b6fce8CE12f05a05dF6894b4140b7e8bC7",
    "userId": "373394983"
  }
}