Nested array support?

Part of my request body to the API needs to have this inside it. However it won't allow me to use nested arrays in the response body, is there a workaround to this? Perhaps just making the arrays variables and passing them that way? or does Buildship simply not allow nested arrays in a request body? Whenever I try to save this it says "Function updateDoc() called with invalid data. Nested arrays are not supported"

Body:

{
"colorPalette": [
[
246,
242,
255
],
[
255,
166,
213
],
[
228,
57,
71
]
]
}