Turn an array into a single object

Question

I have the following array

[
 {"item":"pageTitle", "value":"My Page Title"},
 {"item":"instructionalText", "value":"My Instruction Text"},
 {"item":"continueButton", "value":"Continue"}
]

And I want to convert to something like this? Maybe?

{"pageTitle":"My Page Title", "InstructionalText":"My Instructional Text", etc...}

My end goal is to be able to reference it like myContent.pageTitle and get My Page Title in return.

My Model:

    public class GiftAidContent
{
    [JsonPropertyAttribute("PageTitle")]
    public string PageTitle { get; set; }
    [JsonPropertyAttribute("InstrText")]
    public string InstrText { get; set; }
    [JsonPropertyAttribute("AcceptBtnText")]
    public string AcceptBtnText { get; set; }
    [JsonPropertyAttribute("DeclineBtnText")]
    public string DeclineBtnText { get; set; }

}

Using the dictionary as idle_mind suggested in comment, I now have this.

content
Count = 4
[0]: {[page_title, Gift Aid]}
[1]: {[instructional_text, Lorem ipsum dolor sit amet.]}
[2]: {[continue_btn, Continue]}
[3]: {[cancel_btn, Cancel]}

Source that has current data.

List<GlobalContent> listOfGlobalContentsWork 

    public class GiftAidObject
{
    [JsonPropertyAttribute("isGiftAidEligible")]
    public bool isGiftAidEligible { get; set; }    
    public List<GlobalContent> GlobalContentList { get; set; }
    public string ErrorText { get; set; }
}