{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6445",
    "entityType": "User",
    "nonce": "0xd9b7b88afcb1def230986bec98affa5a13e595b7f04458bc6c763b70f2ef2fc9",
    "signature": "0xc33df22d683ba3d4b660e4ccad5e4b0993808c1e9ce128c9e387371d84a269e51db3e867020f9f6727c69e98adb3f9d38d727aade8f2a8b16317314baba2bb511c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}