{ "$schema": "https://json-schema.org/draft/2020-12/schema", "$id": "https://raw.githubusercontent.com/api-evangelist/sinch/main/json-schema/sinch-callback-configuration-response-schema.json", "title": "CallbackConfigurationResponse", "x-generated": "2026-10-08", "x-method": "derived", "x-generator": "derive-json-schema.py", "x-source": "openapi/sinch-brands-api-openapi.yml#/components/schemas/CallbackConfigurationResponse", "properties": { "hmacSecret": { "description": "The HMAC secret used for hashing the callback body using the HMAC-SHA1 algorithm - and for creating the X-Sinch-Signature header.", "type": "string" }, "projectId": { "type": "string" } }, "type": "object" }