| Param name | 
           
              Description
             
            
                Validations
               
             | 
      
|---|---|
| 
        id  Optional  | 
      
         Lookup a contact by internal id, or by the 10+ digit telephone number. For example: Validations: 
  | 
    
| 
        blocked  Optional  | 
      
         Block or unblock a contact. Block prevents outbound actions (calls, sms, emails), and also blocks all inbound calls & sms. Validations: 
  |