{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x10a4a1ab4609dc2089aa88e0d974e8d03742bdbb6419afb6798802cdc3f57815",
    "signature": "0x3a005d72ec8e285e43d9c9978758eed0be72c30170e2482ae38c5d73e7d1e62f57f6d5dec72796ee15aafaaa06c4ac0991f8cab09f51b241c89f23c0453e80cb1b",
    "signer": "0xd1946596a368736748D33b20A85DE7B2a84CcD2b",
    "userId": "650671718"
  }
}