{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "336459",
    "entityType": "User",
    "nonce": "0x8a2bd41cc726d2ed6790a0f193d3da4b3cf6ad28e632def370b3702780966e72",
    "signature": "0x470d582eb7a6301c7fb11ef4a7dd979c4d3fed1de51c8e9d4d293341a04d9a0f773db290e7322500ae048713ad7895b57756cff7bd18a1b982b227e3b90d5a1a1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}