{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7105401098a17b9ea6be3295f977b08952c942e27584db39c213e5696d0f52ef",
    "signature": "0x05201157e3e581093be1321f6ff27b8472159b14fcec44e6629d6e09db437f376d94ce29d2e43dc59e95bb8a82cdcd368dc9b1642288362297415e92bb22ebe61c",
    "signer": "0x9977437b12B1b9aF6A9B471Dffd438009fEC9345",
    "userId": "700583162"
  }
}