{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x29da28f09c6512999b09c85993c0cdc5e86bd090405ca79123a4620e8e89b455",
    "signature": "0xc64fa5f3bee5333cf13ddcdaf2b824537ab8876a34dba7582af651d5cabdf44a1a215983f3e7489ad2ab506a0ede4f30bc93315c8f87db847bf9cbf8fb9802e71c",
    "signer": "0x6Ee7842A432b779E1Bf51F27B824fe86161cee6c",
    "userId": "408407824"
  }
}