/user/updateProfile

Updates the user's profile with the information saved in the attribute list. Attributes that are not mentioned are not changed.
Note: There is also a user replaceProfile method to

1) change the entire profile of a user and

2) to delete attribute values if the attribute is not mentioned for the user.

Request body example:

[
  {"name" : "user.firstname", "value" : "John"},
  {"name" : "user.lastname", "value" : "Smith"},
  {"name": "user.ISOCountryCode", "value": "FR"} 
]

Request body example - erase mobile number:
[

{"name" : "user.MobileNumber", "value" : null}
]

Maximum character lengths for standard attribute values:

• FirstName: 50
• LastName: 50
• Nickname: 20
• ZipCode: 10
• Identifier: 2000
• Photo: 2000

Other standard attributes (Email, MobileNumber, ISOCountryCode, ISOLanguageCode, TimeZone, Title, DateOfBirth) are validated by format/enum, not by length. Note that Email is stored in a column of length 129.

Custom attribute values are limited to 2000 characters.

Values exceeding these limits are rejected with HTTP 400 (INVALID_PARAMETER); during contact import, oversized values are silently truncated.