I'm trying to attacch a ContentNote to a lead, problem is that on the lead view the note will show some weird charcters such as "��br��z{^�Ʃx{f".
This is the body of the post call to ContentNote:
 {
    "Title":"titulodenota",
    "Content":" test content.escapeHtml4()"
}

Is there some argmunent i'm missing?

Thanks in advance
 

I'm using rest api to create a note, it goes like this:
 {
    "Title":"note title ",
    "ParentId":"00Q46000004UQ9YEAW",
    "Body":"note body bhugvyf"
}

The parent is a Lead, but that note wont show on the Notes of that lead. The only notes that appear are the ones directly created on the browser.
Any idea on how to address this issue? 
Thanks

I'm using rest api to create a note, it goes like this:
 {
    "Title":"note title ",
    "ParentId":"00Q46000004UQ9YEAW",
    "Body":"note body bhugvyf"
}

The parent is a Lead, but that note wont show on the Notes of that lead. The only notes that appear are the ones directly created on the browser.
Any idea on how to address this issue? 
Thanks