array(3) {
  ["data"]=>
  array(2) {
    ["enrolled"]=>
    array(0) {
    }
    ["errors"]=>
    array(1) {
      ["existing_enrollments"]=>
      array(1) {
        [0]=>
        array(2) {
          ["user_id"]=>
          int(33157)
          ["course_id"]=>
          int(82)
        }
      }
    }
  }
  ["version"]=>
  string(5) "1.0.0"
  ["_links"]=>
  array(0) {
  }
}