{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "849737890",
    "entityType": "User",
    "nonce": "0xc9a315b130e2a8cac0ffcdd63d35bd61ef21a1099f306506f8ae8b86db83a4c0",
    "signature": "0x622aca32c46e86f1ad3add0d7b883991e1407cda3cfca36a5fbbfab316898af5423303b375af8bad6b0bc9f314fddb2403c1f8d8d6ba43b64f45f1b6ed05d1de1c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}