{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "543686915",
    "entityType": "User",
    "nonce": "0xb7d74bb8f7ffa68b0d586a26e5295e040e4615275b824ab787551a9befa4b4ec",
    "signature": "0x6a8c378780229860abc8ef8949d9780593e702920f170fffb7bb17a862d5903709b319ea9a50b3bf44f72f58f62b2b43cbc0c714b5902172eaafb11f4fe4254b1b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}