For those who are looking for JSON alternatives, I have a little gift for you 😀
https://gitlab.com/nilshelmig/barenet/-/tree/main#use-in-f-or-fable-projects

BareFs is the F# implementation of baremessages.org
A simple 8-bit aligned binary encoding format. BareFs comes along with a flexible and easy to use code generator.
So you can describe your messages in a simple schema

type PublicKey data<128>
type Time string # ISO 8601

enum Department {
  ACCOUNTING
  ADMINISTRATION
  CUSTOMER_SERVICE
  DEVELOPMENT

  # Reserved for the CEO
  JSMITH = 99
}

type Customer {
  name: string
  email: string
  address: Address
  orders: []{
    orderId: i64
    quantity: i32
  }
  metadata: map[string]data
}

type Employee {
  name: string
  email: string
  address: Address
  department: Department
  hireDate: Time
  publicKey: optional<PublicKey>
  metadata: map[string]data
}

type Person (Customer | Employee)

type Address {
  address: [4]string
  city: string
  state: string
  country: string
}

and let the code generator do the rest

dotnet bare schema.bare Messages.fs --lang fs

Simple, typesafe and small messages.
Implementations are available for other languages too. Check out https://baremessages.org/ to see the full list.

Feedback is welcomed and much appreciated ❤️