Kotlin JSON serialization - android

i'm new in programming kotlin and i'm writing a Android App for the Google Glass EE 2.
The plan ist to create a App for bicycle navigation with osmdroid just for fun.
The Map is running fine and drawing polylines, polygons and markers works great. Downloading data via Coroutine is also working, my biggest problem is now to parse the JSON data via Kotlin Serialization.
My first Problem is that the Keys (Example: "13_8593_5244_2_8_100") inside map are not static.
In my opnion i need something like a array to call all elements with a for loop but i don't know how to write this as a #Serializable Class.
My second Problem is that the arrays in "gameEntities" have different structures but i think i can solves this in the way described here: Link Stackoverflow
Is this the right way?
Hope you can help me, thanks a lot!
Here the shorte JSON:
{
"result":{
"map":{
"13_8593_5244_2_8_100":{
"gameEntities":[
[
"276572523a5f439cb97d9dec9a5df345.9",
1660584038728,
[
"e",
"R",
"11b6cd618b6e4610a6b02e475dd7be89.16",
52553403,
13366757,
"0bd7e7b363ad428eae5f4d6c6cc0b85f.16",
52550446,
13384642
]
],
[
"527f2069da8444bbb6e01d5c6a7982ea.b",
1660968825455,
[
"r",
"R",
[
[
"2dfe2da57f2a45a68b3778a3e3c966da.16",
52557237,
13373585
],
[
"bc64b427d9654161a9520ce5db4f8d5d.16",
52559693,
13353633
],
[
"890ec73c6d464b6080b66d4f025b3704.16",
52557728,
13350805
]
]
]
]
]
},
"13_8594_5243_2_8_100":{
"gameEntities":[
[
"276572523a5f439cb97d9dec9a5df345.9",
1660584038728,
[
"e",
"R",
"11b6cd618b6e4610a6b02e475dd7be89.16",
52553403,
13366757,
"0bd7e7b363ad428eae5f4d6c6cc0b85f.16",
52550446,
13384642
]
],
[
"13c70bd6dc3742949184388c3520f3b2.9",
1660584025873,
[
"e",
"R",
"11b6cd618b6e4610a6b02e475dd7be89.16",
52553403,
13366757,
"f41e703ec4c346219af94462cbe7afb3.16",
52551164,
13379923
]
]
]
},
"13_8593_5246_2_8_100":{
"error":"TIMEOUT"
}
}
}
}
The Kotlin Code is:
#Serializable
class EntitieTop(val result: EntitieResult)
#Serializable
class EntitieResult(val map: Array<EntitieMap>)
#Serializable
class EntitieMap(val gameEntities: List<EntitieGameEntities>)
#Serializable
class EntitieGameEntities(val guid: String, val timestamp: Long)
fun serialTest() {
val data = Json.decodeFromString<EntitieTop>(jsonString)
println(data.result.map[0])
}

Instead of trying to reinvent the wheel, try using an existing json serialization library. One of the easiest ones is GSON. Here's an example for using it

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