{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1648254",
    "entityType": "User",
    "nonce": "0xb987bc1c0adef072cb90a5f4689992056dee784cc70ea300151bc662f8d09f87",
    "signature": "0x5259000711af196839209221fa6369ca08ddfd57c3c7d6ac53362e4d5654da8e4ee178aa9a9897fae12d7a36b5fb1e97ca4af3cc2eb8430c1eec2d19f85563371b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}