Update a custom field value for contact

{
    "fieldValue": {
        "contact": 4,
        "field": 24,
        "value": "Blue"
    },
    "useDefaults": true
}

{
    "fieldValue": {
        "contact": 2,
        "field": 5,
        "value": "Option 1"
    }
}

{
    "fieldValue": {
        "contact": 2,
        "field": 7,
        "value": "2018-12-31"
    }
}

{
    "fieldValue": {
        "contact": 2,
        "field": 7,
        "value": "2020-05-19T02:45:00-05:00"
    }
}

{
    "fieldValue": {
        "contact": 2,
        "field": 6,
        "value": "||Option 2||"
    }
}

{
    "fieldValue": {
        "contact": 2,
        "field": 6,
        "value": "||Option 1||Option 3||Option 4||"
    }
}