我有一个带有这种密钥的json：

...
    "metaData": {
        "date:create": "2019-11-13t15:42:02+01:00","date:modify": "2019-11-13t15:42:02+01:00","exif:ColorSpace": "1","exif:ExifImageLength": "1500","exif:ExifImageWidth": "1125","exif:ExifOffset": "38","exif:Orientation": "1","jpeg:colorspace": "2","jpeg:sampling-factor": "1x1,1x1,1x1"
    },...

metaData对象中的所有键都是动态的（不是真的，但是有数百种不同的键）如何在不必创建具有所有可能键的类的情况下序列化此对象。

这是我的工作

@Serializable
data class Image(
    val name: String? = null,val uid: String,val createdAt: String? = null,val updatedAt: String? = null,val metaData: MetaData? = null,)

@Serializable
data class MetaData (
    @SerialName("date:create")
    val dateCreate: String,@SerialName("date:modify")
    val dateModify: String,@SerialName("exif:ColorSpace")
    val exifColorSpace: String,@SerialName("exif:ExifImageLength")
    val exifExifImageLength: String,@SerialName("exif:ExifImageWidth")
    val exifExifImageWidth: String,@SerialName("exif:ExifOffset")
    val exifExifOffset: String,@SerialName("exif:Orientation")
    val exifOrientation: String,@SerialName("jpeg:colorspace")
    val jpegColorspace: String,@SerialName("jpeg:sampling-factor")
    val jpegSamplingFactor: String
)