{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16564",
    "entityType": "User",
    "nonce": "0x5d105c6d540d598db96134b9b9042a7a02a17f7ee908e7013bf3ae3d39652fe0",
    "signature": "0x52254945fb83e3de9173ce89d5b08cf0dcffa5fc15fe43778e935df150dd5dba53d59307528239c71dc465601b8ccf0213f3e9309b8dd9331d30f8487be940df1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}