post https://api.loopcrypto.xyz/api/v2/payment-type
Creates a new payment type configuration that specifies which tokens an entity or merchant will accept as payment. Each payment type defines a specific blockchain network (e.g. Ethereum, Polygon) and token (e.g. USDC, DAI) combination. The payment type is associated with the entity identified by the provided API key, and optionally can be linked to a specific merchant under that entity.