{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "391370",
    "entityType": "User",
    "nonce": "0x906629b72009640ea68b1305fbc95b4397fd884762a78ab5324ccb4e0aa50de1",
    "signature": "0x6fd0676f5afa21c8c4d0d5b0705d7fbcfd772cb2e5c91faa9fde39047678502176aba22b71f55e17af7b7aee72d2628bc8ed192283f9aa0c2b86a037159c43111c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}