{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "297345",
    "entityType": "User",
    "nonce": "0x48fba7dd20a48250bf4f93d365c185f1d0a3ed82230b569bc578b019b986b1cd",
    "signature": "0x384fcd4d667e5b5170efc77df3dc8c255553721477bc02f8cb109d7a1a4c68b1211cb8f7bb1f870488be5599b7231bb3f7909542c33bea1235363eeb5551e8e41b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}