Crypto purchase - The JavaScript 1 node sets several variables required by the API request (such as the API endpoint, POST data, and nonce value). The API auth 1 and API auth 2 nodes create the API authentication signature using the SHA256 and HMAC SHA512 hashing algorithms. The API request node performs the actual HTTP POST request to the API
AddOrder endpoint. The API error check and Logic 1 nodes check the response from the API to determine if the call was successful or not, and decide which path to take next (balance retrieval or messaging app).