curl -u 'testadmin:admin1234;' -H "accept: application/json" -X GET "http://localhost:8080/kie-server/services/rest/server/containers/mortgage-process_1.0.0-SNAPSHOT/processes/instances/1"
{
  "process-instance-id" : 1,
  "process-id" : "Mortgage_Process.MortgageApprovalProcess",
  "process-name" : "MortgageApprovalProcess",
  "process-version" : "1.0",
  "process-instance-state" : 1,
  "container-id" : "mortgage-process_1.0.0-SNAPSHOT",
  "initiator" : "testadmin",
  "start-date" : {
  "java.util.Date" : 1594986617309
},
  "process-instance-desc" : "MortgageApprovalProcess",
  "correlation-key" : "1",
  "parent-instance-id" : -1,
  "sla-compliance" : 0,
  "sla-due-date" : null,
  "active-user-tasks" : {
    "task-summary" : [ {
      "task-id" : 1,
      "task-name" : "Correct Data",
      "task-subject" : null,
      "task-description" : "",
      "task-status" : "Ready",
      "task-priority" : 0,
      "task-is-skipable" : null,
      "task-actual-owner" : "",
      "task-created-by" : "",
      "task-created-on" : {
  "java.util.Date" : 1594986617379
},
      "task-activation-time" : {
  "java.util.Date" : 1594986617379
},
      "task-expiration-time" : null,
      "task-proc-inst-id" : 1,
      "task-proc-def-id" : "Mortgage_Process.MortgageApprovalProcess",
      "task-container-id" : "mortgage-process_1.0.0-SNAPSHOT",
      "task-parent-id" : null
    } ]
  },
  "process-instance-variables" : null
}