{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520381623",
    "entityType": "User",
    "nonce": "0xdf8e24a2fa524f5923f308bc84386c5464b830d4f77997c7c090f47fb123811d",
    "signature": "0x2629d40423b3b3e953997a3fda43849876f61bace82b43453a0f97254fe506290d656c64ac6cf4f9864bb95e690376536cfe1ec4c2ed46cf51d73017e48354e31b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}