action sinao_app_documents_sales_signature_create { label: "Create a signature" description: "Create a new signature" provider: sinao method: POST path: "/apps/{appId}/signature" encoding: json input: { type: "object" properties: { documentId: { type: "integer" } email: { type: "string" } firstname: { type: "string" } lastname: { type: "string" } phone: { type: "string" } } required: ["documentId", "email", "firstname", "lastname", "phone"] additionalProperties: false } output: { type: "object" additionalProperties: true } }