{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x47c9c314156f35b03fd750f60c9526c5b31f8a3caaea7ea6b1bfbc3064055449",
    "signature": "0xfe4b9aea7eb205ed0a6ad3e73133a82a4d9da52994fce81d4db4e6b03cbcc090072ac29e6c9a6e8d05502ba109e968cdd8487abc3e5e8f601bdffade867770c61b",
    "signer": "0x995Ca8f2d3956487967aCfd7EA849313C448c3a8",
    "userId": "227564"
  }
}