{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x46385a393fcaf342c808861b9f258baa7fcd4abaff2f7d2d5a1a56fbe36d673f",
    "signature": "0x85635d2bb9f257ebb657cca9da69928d7fb1a2b2464a694a6bb292a3417863a41d21e823aec902c61d0d7a1dbf9ab949ff009f52a04fe170afa1ee3f4755e12e1c",
    "signer": "0x8E3A4E1A0d1Aa7628E0FDbc872062F921A449403",
    "userId": "552753858"
  }
}