{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "243552",
    "entityType": "User",
    "nonce": "0xc81f4faa6a94587b8437fb52649c1d9cfa283e4ae9dda5eba06304c057962a53",
    "signature": "0x3e2990555b5c334c5c8c0bb6f39dc0c3a570d804895c54241c9d99ad9075fabb4575822f03175f48d6e90f22b19939921f69b1a71f7933ae0a2aad54da33bc4a1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}