{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe02f8aa61860438c22a4c04d95ed6fbeaeaf51e14a956e3cb410f8f04d60b2a5",
    "signature": "0xbe888deab484108af99f682042b0a8c8e7fc8e38bd87eb7cb1d9666e63c879917d5f860eb0aae821cca78b6b114fdcbb410cc14b0943d63f0c2257ed4b79f8ef1c",
    "signer": "0xf67B2953DB302efEF7466771Cb8c7e9d442b3706",
    "userId": "290943603"
  }
}