{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354788669",
    "entityType": "User",
    "nonce": "0x04c17734e1543448c5559ee1fa0ab5f7b332bd7e7071ff5324de3ae2f3fee182",
    "signature": "0x8493e2b123ed1a1177a87f40803e507a05e0475bcc38cd61ff5ca25c8f7617d77656ba850d25b06821cfc08ca41c3af7aad090cc040914831fb1d511140b26f81c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}