{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "388293079",
    "entityType": "User",
    "nonce": "0x2ace1cbf723f32191d71f23cfff48e1b9cf86c5e078fa06a206e0990fd119e86",
    "signature": "0xdb3b852036e951de203bf82567623c9a7ecd31f492a395accf66ceb60f338c71697a319b9464f18f75d08da888048befe91477592a4b734e3b55a662acdc668f1b",
    "signer": "0xf5a2CEE58d569bC12a4Fc390E031Ff6a518ca8Af",
    "userId": "674150841"
  }
}