jacksonmapper - deserialize dynamic (json) properties into array/map field

I am struggling to achieve the following functionality: deserialize dynamic properties (incoming json) into array field/map.

Input:

{
  dynamic_field1: "value1",
  dynamic_field2: "value2",
  ...
  name: "John",
  age: 20
  ...
}

into Kotlin data class (although being a kotlin data class is not that relevant):

@JsonDeserialize(using = PersonDeserializer::class)
data class Person(
  val personName: String,
  @JsonProperty(using = SpecificIntDeserializer::class)
  val age: Int,
  val dymamicProperties: Map<String, String>
)

So essentially use (delegate) provided or default bean deserializer (whenever possible) BUT also get all fields that start with dynamic_ and process them separately.

What I tried so far:

• find the ValueInstantiator, iterate through the main constructor (instantiator.withArgsCreator) and for each parameter find the right deserializer; however, I am unable to connect this with right JsonToken
• tried ContextualDeserializer and ResolvableDeserializer but got lost.

Any suggestions?