{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1584941",
    "entityType": "User",
    "nonce": "0xa9dabdff410d7dc6b0d6b5dc8d9c0a67cb47b3e418f5343214577889145da3ff",
    "signature": "0xa32125343641a159fda38996b3dc3200cd5aa649a233a2844c2569c9066290a2633c71c4d6c6b4a8d44219abba816fa1f73ed53c17f943224a492fe3b666a3641c",
    "signer": "0xE68B644418C49102f3baFE7007482B0DB0df6F74",
    "userId": "749228874"
  }
}