Validate customiser labels

curl https://web.signcustomiser.com/api/v3/customisers/1/labels/validate-update \
  --request POST \
  --header 'Accept: application/json' \
  --header 'Authorization: Bearer YOUR_API_TOKEN' \
  --header 'Content-Type: application/json' \
  --data '{
  "adding_to_cart": "Adding to Cart",
  "allow_custom_background": true,
  "apply_style": "Apply to all",
  "aspect_ratio_warning": "Values may be modified to maintain the required aspect ratio",
  "backboard_upload_error": "Maximum upload size 2mb",
  "backgrounds": "Backgrounds",
  "backlight_title": "Backlight",
  "border_included": "(includes {border} border)",
  "bottom_side": "Bottom",
  "braille_fixed_size_info_label": "Braille dots stay at their accessibility-standard size; larger sign sizes carry larger tactile lettering.",
  "braille_frame_too_small_message": "Choose a bigger sign size so the braille can fit at its fixed size.",
  "braille_overview_fitted_to_screen_label": "Overview — fitted to screen",
  "braille_translation_failed_message": "Braille translation could not refresh. Please try again.",
  "braille_translation_pending_message": "Translating to Braille…",
  "braille_untranslatable_modal_button_label": "Get a custom quote",
  "braille_untranslatable_modal_label": "Some of your text cannot be turned into braille automatically. Send us your design and we will quote it for you.",
  "cancel": "Cancel",
  "char_limit_reached": "You have exceeded the maximum number of characters for the current size.",
  "character_limit_message": "The maximum number of characters for this current size has been reached.",
  "character_text": "characters max per line for current size",
  "click_word_desktop": "Click on a word to begin customising it.",
  "cm_button": "Use cm",
  "colour_min_size_message": "The selected colour is only available for larger sizes.",
  "colour_title": "Color",
  "contact_description": "Feel free to reach out through our Live Chat, read through our FAQ page or send us an email.",
  "contact_header": "Have some questions? We'"'"'re here for you!",
  "copy_button": "Copy",
  "create_product_failed": "Something went wrong",
  "creating_product": "Creating Product",
  "crop_confirm": "Confirm",
  "crop_modal_title": "Resize your image",
  "crop_upload": "Upload your own image",
  "custom_design_button_label": "Got a logo? Get a quote",
  "custom_design_form_file_label": "Accepted file types include JPEG, PNG, SVG, PDF, AI and EPS.",
  "custom_design_form_input_error": "Invalid input.",
  "custom_design_form_message_error": "Form submission failed. Please try again.",
  "custom_design_form_message_success": "Thank you for your submission.",
  "custom_design_form_size_error": "File size cannot exceed 10MB.",
  "custom_design_form_submit_message": "Submitting form, please wait.",
  "custom_design_form_total_size_error": "Total file size cannot exceed 20MB.",
  "custom_design_steps_header": "How it works",
  "custom_design_tab_title": "Custom",
  "custom_design_type": "form",
  "custom_sizing_message": "Enter text to set a custom size",
  "default_text": "Start Typing",
  "display_initial_background_image": true,
  "display_initial_review_image": true,
  "edit_design": "Edit my design",
  "editing_word": "Editing",
  "etsy_button": "Continue to Etsy",
  "etsy_copied_button": "Copied",
  "etsy_copy_details_button": "Copy details",
  "etsy_customisation_summary_label": "Customisation summary",
  "etsy_download_preview_button": "Download preview",
  "etsy_listing_url_missing": "Your Etsy listing link hasn'"'"'t been set up yet. Contact the shop to get the link.",
  "etsy_preparing_image": "Preparing image",
  "etsy_preview_error": "Preview couldn'"'"'t be generated. Please try again.",
  "etsy_return_button": "Return To Etsy To Place An Order",
  "etsy_step1": "Copy your details",
  "etsy_step2": "Return to Etsy",
  "etsy_step3": "Paste into the personalisation box",
  "etsy_suggested_price_label": "Suggested price",
  "etsy_summary_colour_label": "Colour",
  "etsy_summary_description": "Copy these details into the personalisation box on Etsy, then add this item to your basket there.",
  "etsy_summary_design_label": "Design",
  "etsy_summary_face_colour_label": "Face",
  "etsy_summary_halo_colour_label": "Halo",
  "etsy_summary_icon_label": "Icon",
  "etsy_summary_line_label": "Line",
  "etsy_summary_no": "No",
  "etsy_summary_not_selected": "Not selected",
  "etsy_summary_side_colour_label": "Side",
  "etsy_summary_title": "Your Etsy order details",
  "etsy_summary_trim_colour_label": "Trim",
  "etsy_summary_tube_colour_label": "Tube",
  "etsy_summary_uploaded_design_label": "Uploaded design",
  "etsy_summary_yes": "Yes",
  "example": "Example",
  "extra_colour_exclusion_message": "The selected option is not available with this colour.",
  "extras_title": "Extras",
  "file_label": "Upload your logo",
  "file_upload_label": "Drop an image here or tap to browse",
  "font_title": "Font",
  "generating_image": "Generating Image",
  "header_text": "CREATE YOUR CUSTOM SIGN",
  "height_input": "Height",
  "icon_button_label": "Icons",
  "icon_title": "Icons",
  "inch_button": "Use inches",
  "inclusions": "Your Custom Sign\nPower Supply\nDigital Installation Guide\nFree Express Shipping\n12-Month Warranty",
  "inclusions_header": "What'"'"'s included in your custom sign?",
  "invalid_characters": "Text contains invalid characters: {characters}. Please try another font.",
  "jacket_colour_exclusion_message": "The selected jacket option is not available for this colour.",
  "jacket_title": "Jacket",
  "label_under_price": "",
  "left_side": "Left",
  "letter_parts_description": "",
  "letter_parts_title": "",
  "lightbox_product_type_title": "Lightbox",
  "line_limit_reached": "You have exceeded the maximum number of lines for the current size.",
  "lines_text": "lines",
  "loading_manual_clear_text": "Your design is being added to the cart. Please wait...",
  "logo_button_text": "Submit Custom Design",
  "logo_text": "To Submit a Custom Design, please click on the button below",
  "logo_upload_design_ready": "Design Ready!",
  "logo_upload_failed_description": "Fill out the form to send us an inquiry, we'"'"'ll automatically attach this image",
  "logo_upload_failed_title": "We couldn'"'"'t process your image",
  "logo_upload_file_too_large": "This file is too large. Choose a file up to {limit} MB.",
  "logo_upload_form_description": "We'"'"'ll keep processing your file and send the customisable version to your email when ready.",
  "logo_upload_form_email_placeholder": "Your email",
  "logo_upload_form_name_placeholder": "Your name",
  "logo_upload_form_submit_button": "Submit Request",
  "logo_upload_form_submitted_description": "We'"'"'ll process your image in the background and email you when it'"'"'s ready.",
  "logo_upload_form_submitted_title": "Request Submitted!",
  "logo_upload_form_title": "Taking longer than expected?",
  "logo_upload_pending_description": "Depending on the complexity of the image, this may take a few minutes.",
  "logo_upload_pending_title": "Processing your image",
  "logo_upload_try_another": "Try another image",
  "main_tab_title": "Text",
  "manual_button": "Enter dimensions manually",
  "material_mounting_exclusion_message": "The selected material is not available with this mounting option.",
  "material_support_exclusion_message": "The selected material is not available with this backboard.",
  "material_title": "Material",
  "max_sign_char": "characters max",
  "max_sign_modal_button_label": "Get a quote",
  "max_sign_modal_label": "Size is over the limit. Contact us for a quote.",
  "min_character_message": "or more characters are required for this size, please add more characters.",
  "min_height_sign_warning": "The overall sign height is too small. Please increase the height.",
  "mounting_colour_exclusion_message": "The selected mounting option is not available with this colour.",
  "mounting_colour_min_size_message": "This colour requires a larger sign size.",
  "mounting_colour_title": "Mounting colour",
  "mounting_letter_part_title": "Mounting Side",
  "mounting_support_exclusion_message": "The selected mounting option is not available with this backboard.",
  "mounting_title": "Mounting",
  "options_tab": "Options",
  "preview_note": "Colours may appear different in real life",
  "price": "",
  "price_after_label": "",
  "price_box_text": "Free shipping, One year guarantee",
  "price_button_add": "Add to Bag",
  "price_button_finish": "Finish",
  "product_title": "Custom Sign:",
  "product_type_title": "Letter Type",
  "qualities_header": "Good to know",
  "quote_button": "Finalize Quote",
  "recenter": "Recenter",
  "recenter_warning": "Click to reset position",
  "retry": "Try Again",
  "right_side": "Right",
  "rotation": "Rotation",
  "shape_finished_size": "Finished size: {width} × {height} {unit}",
  "shape_proportions_fixed_by": "Proportions fixed by {shape}",
  "shape_size_adjusted_to_fixed_proportions": "Your saved size was adjusted to match this shape’s fixed proportions.",
  "shape_size_adjusted_to_range": "Size adjusted to fit the available range.",
  "shape_sizing_empty_feasible_range": "This shape cannot be sized within the available minimum and maximum dimensions.",
  "shape_sizing_invalid_canonical_bounds": "This shape is unavailable because its proportions could not be loaded.",
  "shape_sizing_invalid_intent": "Enter a valid size to continue.",
  "shape_sizing_preset_requires_custom": "Choose a custom size for this shape.",
  "share_design": "Share my design",
  "share_design_modal_description": "",
  "share_design_modal_title": "Share Your Design",
  "show_background_preview": true,
  "show_contact_section": true,
  "show_custom_design": true,
  "show_custom_design_link": true,
  "show_inclusion_section": true,
  "show_preview_note": true,
  "show_review_images": true,
  "show_review_section": true,
  "show_styled_note": true,
  "show_text_editor_overlay": true,
  "sign_header": "YOUR SIGN",
  "size_title": "Size",
  "slider_button": "Switch back to slider",
  "summary_header": "YOUR SIGN DETAILS:",
  "support_colour_min_size_message": "The selected backboard colour is only available for larger sizes.",
  "support_colour_title": "Backboard Color",
  "support_title": "Backboard",
  "tap_word_mobile": "Tap on a word to begin customising it.",
  "text_align_center": "Center",
  "text_align_left": "Left",
  "text_align_right": "Right",
  "text_align_title": "Text Align",
  "text_button_label": "Got a text sign? Customise now",
  "text_label": "Write your text",
  "text_orientation_horizontal": "Horizontal",
  "text_orientation_title": "Orientation",
  "text_orientation_vertical_stacked": "Vertical",
  "text_title": "Text",
  "top_side": "Top",
  "upload_background": "Upload Background",
  "uploading_images": "Uploading Images",
  "user_bg_scale_cancel": "Cancel",
  "user_bg_scale_continue": "Continue",
  "user_bg_scale_description": "Specify the width and height this image represents in order to see your sign at a realistic scale.",
  "user_bg_scale_error": "Width and height must be numbers greater than 0.",
  "user_bg_scale_title": "Relative Scale",
  "visualiser_off": "Off",
  "visualiser_on": "On",
  "width_input": "Width",
  "zoom_in": "Zoom In",
  "zoom_out": "Zoom Out"
}'