title: Viber REST API, how to find Unique Viber user id?
body: <p>Resource URL <a href="https://chatapi.viber.com/pa/send_message" rel="noreferrer">https://chatapi.viber.com/pa/send_message</a></p>
  
  <p>General send message parameters</p>
  
  <p><a href="https://i.stack.imgur.com/LTxM5.png" rel="noreferrer"><img src="https://i.stack.imgur.com/LTxM5.png" alt="enter image description here"></a></p>
  
  <p>I am trying to send message to viber from Postman. I don't know how to find  Unique Viber user id, that parameter is required.</p>
  
  <p>I am getting this error:</p>
  
  <p><code>{"status":999,"status_message":"Bad receiver ID","message_token":5126721184521938239}</code></p>