{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309749",
    "entityType": "User",
    "nonce": "0x340336f1446539ac1db31a14e2b6b0ed8c0adef9cd85f7dba127c545718797f4",
    "signature": "0x9beec59973ff966fb5878de5606d341a6f8af1d2cd5797b2de67a544a8e36d8c1bbb50745a2a05528dc105e165c836dfacb9c9fb795a6f74560e21e3716ee37d1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}