{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x59821c2cad2492ea673025607b93be897961b6f92517f3a4153cdf1c8c8c9ea5",
    "signature": "0x0711516da77438bdf3819ba08b11e95ff1c183703b59400bbc11d51da769f9a6761d6fb1caea88a775ac101bc1bcd9b85b595982c49a08ff3f5c8afb0607ba6a1b",
    "signer": "0x1121b72c91De90c68928c26cE01ac3337FA1A0E1",
    "userId": "814668215"
  }
}