Market IDs

Reya identifies markets two ways, and as an integrator you mostly use symbols:

• Symbol (e.g. ETHRUSDPERP, WETHRUSD) — what you use almost everywhere: order requests, channel subscriptions (/v2/market/{symbol}/…), and the order, execution, depth, and position payloads you receive.

• marketId — an opaque numeric id you use in just two places: it's returned by the market-definition endpoints (the symbol ↔ id mapping), and you sign it into the EIP-712 OrderDetails. Use the value from the market definition as-is — you don't construct or interpret it.