{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1323567",
    "entityType": "User",
    "nonce": "0x1cef15ecb23118424e0f92bd22b7b4e2265f036f49e939f9531783382031789b",
    "signature": "0xaa278c022b278e4eb9cc2f1a2e622b29ce76b23e544a1600c7080b62cceb98ee466f41395b27666a123527c22bd5e2ce1b12dbeff5a21c55011eb68acf0ad90d1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}