{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "777",
    "entityType": "User",
    "nonce": "0x104f1f6b9e334c2014da9a4d07fc5df4f32b2eb4105ce85594217599ece47f9c",
    "signature": "0x3a67c1327b9dacf6409380058f1755cae65d9fadc997f8d524c9456e0c60b6f10f430ceffb9031eaa5f0cdba92faada4f980e50637cab7ef9d16c78ee23527491c",
    "signer": "0xFA2BcB8D14637859aa98a87cbe91187525bbB963",
    "userId": "965833467"
  }
}