put https://api.followupboss.com/v1/people/
Update a contact
Custom Fields
If the account has custom fields defined you can also set these when updating a person. You can use the customFields endpoint to see which custom fields are available in the current account.
To delete a custom field value on a person, set its value to null:
{
"customBirthday": null
}
Altering email addresses and phone numbers of relationships
Email addresses and phone numbers associated to relationships can be edited and deleted through /v1/people , however you cannot switch alter the relationshipId of a given email address or phone number through /v1/people , this must be done through /v1/peopleRelationships