action ritc_add_app_user_to_channel { label: "addAppUserToChannel" description: "Assign a channel to a user" provider: ritc method: POST path: "/users/{user_id}/channels" encoding: json input: { type: "object" properties: { user_id: { type: "string" } } required: ["user_id"] additionalProperties: false } output: { type: "object" additionalProperties: true } }