{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "629154627",
    "entityType": "User",
    "nonce": "0x940c3db3249c55588e2aae128015a7ac1b1e411ad58c21f372eadf7bc0fe8c01",
    "signature": "0x8fbf9c74b557f304016aebb3817a4c0a44da4db06b52ca0f21d20b40c738c94a5ed9be62b49586eaedbb824bb274d83b6bba32a5f46a1903f88572cc3e22090f1c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}