Sending one contact or contact list to phone number or group

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https://api.ultramsg.com/{{instance_id}}/messages/contact

token *Required
to *Required	Phone number with international format e.g. +14155552671 or chatID for contact or group e.g [email protected] or [email protected]
contact *Required	Contact ID or Contact IDs array example : [email protected] or [email protected],[email protected],[email protected] Max length : 300 char , almost 15 contacts

Json

Note : don't forget to URL encode your query params like base64 or utf-8