jackson - read specific field from string list of jsons

I'm pretty new to world of jackson, and wanted to read the value of specific field from list of jsons (which is a response body of third-party api).

for a single json, using objectMapper works fine.

        ObjectMapper mapper = new ObjectMapper();
        JsonNode rootNode = mapper.readTree(sampleString);
        JsonNode idNode = rootNode.path("id");
        System.out.println("id: "+ idNode.asText());

But I want to parse list of jsons (which is a string coming from a response body) .So for example I receive this body:

[  
{  
  "id":10,
  "firstName":"Jack",
  "primaryPhone":"9999999999",
  "email":"jack@me.com"
},
{  
  "id":4,
  "firstName":"Mark",
  "primaryPhone":"9999999991",
  "email":"mark@me.com"
},
{  
  "id":12,
  "firstName":"Susaan",
  "primaryPhone":"9999999992",
  "email":"susan23@me.com"
}
]

I want to read the ids first, and if I find a specific id, return some other info from that block.

For example if id=4, read the firstName and email of that person.

But I'm not sure how to parsee list of json.

Any suggestions/comments is appreciated.