{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeac44f7c8f866cf770432b4bd2dff6b0549d56bf35ee95239ee54354cf6862b6",
    "signature": "0xd7f1a617774f00f80f7e9d37bd45d6a3ee9edd26f117ffc4cc30cdfbf614afc54c250d6ebb3da5fbfc1d2c374b7d33bc958ead60b6775b763537850f3f4ccb981c",
    "signer": "0x6427f04609a730DDf483f3870Cc9ac8F766cD995",
    "userId": "322375136"
  }
}