{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123497",
    "entityType": "User",
    "nonce": "0x0aad39a7a098651a932061f37c833e9fe9262a7561fdfaeeb260ee63ca33a1c5",
    "signature": "0xf9ca7e90e5856ecd0e01811524cbb98469dd53907cf0d761c7a8758fd759d2cb74c3345451dd129015c54efeda35c96295fabdacebe2222285fc1089a381cc231c",
    "signer": "0xC3B8Db4fD6b5608e625Fc02e4e8B7a274B7dB687",
    "userId": "110486155"
  }
}