{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0xf167be7aec6d4f707a28d80b1e736626a6bf8af52b260d26ef33725a7df0a42d",
    "signature": "0xc14862eb8673ca29e4a6ad0f98c3f85938e4ff0540f1c20e4f26c8d8c7274a073edbd9e52f77d9419a3730e6d57667e33b5f860fb5781f4ce8af65410c9042aa1c",
    "signer": "0x405A18E09D8C4100F2412f37001497351EcE9C2c",
    "userId": "21357518"
  }
}