Attributes

GroupName (Mandatory)	String	Name of the created group
Contacts (Mandatory)	Array	List of contacts to be added to the group
MobileNumber (Mandatory)	String	Phone number of each contact. No spaces, no special characters, include country code.
Wildcards (optional)	Array	Array containing the personalized values for the bulk campaign. Key: Name of the field to be modified on each message Value: Value for which the key is to be modified.