I updated my application to Spring Boot 3 and trying the existing controller for a PUT request and it does not work for a json.
Regardless of the values that I sent even in controller level it always set the default values ans never updates the values.

This is the values that I sent in postman as PUT request

{
    "siteId": "1a6683e1-c9a7-4887-b400-b7faafa5819f",
    "version": 10,
    "visibilityPreferences": {
            "featureA": true,
            "featureB": false,
            "featureC": false,
            "featureD": true,
            "featureE": false,
            "featureF": false,
            "featureG": true,
            "featureH": false,
            "featureI": false,
            "featureJ": false,
            "featureK": false,
            "featureL": false
    }
}

and this is the response that I get

{
    "siteId": "1a6683e1-c9a7-4887-b400-b7faafa5819f",
    "version": 10,
    "preferences": {
        "visibilityPreferences": {
            "featureA": false,
            "featureB": false,
            "featureC": false,
            "featureD": false,
            "featureE": false,
            "featureF": false,
            "featureG": false,
            "featureH": false,
            "featureI": false,
            "featureJ": false,
            "featureK": false,
            "featureL": false
        }
    }
}

and as it is seen all of them false.

Then this is the code part

Controller

@RestController
@RequestMapping("/api/sites")
class PreferenceController(private val preferenceService: PreferenceService) {

    @AuthorizeUser
    @PutMapping("/{siteId}/preferences")
    fun updatePreferences(@PathVariable siteId: UUID, @RequestBody preferencesVisibility: PreferencesVisibility): Preference = 
        preferenceService.updatePreferences(siteId, preferencesVisibility)
}

PreferencesVisibility class definition

class PreferencesVisibility : Serializable {
    var visibilityPreferences = VisibilityPreferences()
}

VisibilityPreferences class

class VisibilityPreferences : Serializable {
    var featureA: Boolean? = true
    var featureB: Boolean? = true
    var featureC: Boolean? = true
    var featureD: Boolean? = true
    var featureE: Boolean? = true
    var featureF: Boolean? = true
    var featureG: Boolean? = true
    var featureH: Boolean? = true
    var featureI: Boolean? = true
    var featureJ: Boolean? = true
    var featureK: Boolean? = true
    var featureL: Boolean? = true
    var featureM: Boolean? = true
}

Also I added some converter class for Spring Boot 3

Preference Entity class

@Entity
@Table(name = "preferences")
class Preference() : BaseEntity() {

    @Convert(converter = VisibilityPreferencesJsonConverter::class)
    @Column(columnDefinition = "jsonb")
    var preferences: VisibilityPreferences = VisibilityPreferences()
}

Converter Class

@Converter(autoApply = true)
class VisibilityPreferencesJsonConverter : GenericJsonConverter<VisibilityPreferences>() {
    override val typeReference = object : TypeReference<VisibilityPreferences>() {}
}

Generic Converter Class

abstract class GenericJsonConverter<T> : AttributeConverter<T, String> {
    private val objectMapper = ObjectMapper()

    abstract val typeReference: TypeReference<T>

    override fun convertToDatabaseColumn(attribute: T): String =
        try {
            objectMapper.writeValueAsString(attribute)
        } catch (e: Exception) {
            throw IllegalArgumentException("Error converting object to JSON", e)
        }

    override fun convertToEntityAttribute(dbData: String): T =
        try {
            objectMapper.readValue(dbData, typeReference)
        } catch (e: Exception) {
            throw IllegalArgumentException("Error converting JSON to object", e)
        }
}

Regardless of the values gives it always put default values,

Even I try to debug and observe values in controller level I observe default values,

So I am not sure how to change it because is it related with the converter or should I add other annotations in the entity class,

This is just a simply cascaded JSON request, how could I achieve this in Spring Boot 3.

Thanks for advance