{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381638009",
    "entityType": "User",
    "nonce": "0xa07b25180cdf2302df9d1f8b2d4e2bb64a2a003eb06fd66ec88a3e9e48545feb",
    "signature": "0x482648366436d3bd98bb0c64c87f8e19730f895a20eb25cea16407ea4ccd755660e6a38a70aad1e3b9dcd9f9cf9764fc4ee93b0f411c9941d37fbe4822469f7a1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}