{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18241",
    "entityType": "User",
    "nonce": "0x4bd99b4e03d1e099e48280da09aec5a6d9399c20aa3264f0ef8b00b9bde6d955",
    "signature": "0x51adad9b06939ba21b27370900526b9943123a091c487d4ad024f7164e0ed8e701b6ceb182c417eedf8c954b48273514c6d8b8058e30b06ba5873f4f841f729b1b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}