This event is fired whenever any signer of a signature request receives the link to sign the document. In the case of parallel signing (un-ordered signing), you will receive the events for each signer individually. It can also contain user-specific metadata (request_info) if it was sent during RS creation.

{
   "data":{
      "status":"incomplete",
      "owner_first_name":"Jack",
      "expiry_time": 1683033398,
      "sources": [
        {
         "id": 33299021,
         "name": "LP Signing Contract Document",
         "type": "original" 
        },
        {
          "id" 33122312,
          "name": "LP Signing Contract Lease Document",
          "type": "original"
        }
      ],
      "recipients":[
         {
            "status":"not_viewed",
            "first_name":"",
            "last_name":"",
            "order_id":1,
            "last_modified_time":1505462028,
            "recipient_user_id":2,
            "recipient_id":3,
            "created_time":1505462028,
            "email":"hilton@gmail.com"
         },
         {
            "status":"not_viewed",
            "first_name":"",
            "last_name":"",
            "order_id":2,
            "last_modified_time":1505462028,
            "recipient_user_id":3,
            "recipient_id":4,
            "created_time":1505462028,
            "email":"timferry@gmail.com"
         }
      ],
      "owner_email":"jackbarb@gmail.com",
      "owner_last_name":"Barb",
      "next":3,
      "created_time":1505462028,
      "last_modified_time":1505462028,
      "has_markers":0,
      "is_ordered":0,
      "id":34732472,
      "owner_user_id":1
   },
   "metadata":{
      "token": "1AqZ3DEC4fr@21",
      "event_type":"rs.link_sent",
      "event_user_id":2,
      "client_id":null,
      "event_user":"hilton@gmail.com"
   },
   "request_info": {
        "name": "Jack",
        "required": true,
        "id" : 49367567,
        "url": "https://localhost:8090"
    }
}