{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x447090e844319ee5a865dfcdb8d0dfec71c713649a76f9c79f73e16c262487a8",
    "signature": "0x2ce546bd85678bcac5a8924be6b30a2e3c57a285946d0b4d7ad57a148eadc74e1f6d0c9b2b76b2fc31bc2ff572d23e751e435e57e61eb125a25923a29d5e26fd1c",
    "signer": "0x04873597D6740e48B9C057dBDd5C7382629f7d68",
    "userId": "62129768"
  }
}