Update the external ID of a user. The external ID is the ID of the user in your system.
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
The id of the app the request refers to. An application's unique identifier.
"54e9ujn"
"fvua38g"
The id of the user the request refers to. An app's user's unique identifier. It is prefixed with 'usr_'
"usr_01jqebhswje1ka1z7ahr9rfsgt"
"usr_01jqy7455pf8p9bap5qke912g1"
ID of the user in your system. Must be at most 128 characters.
128"customer-user-42"
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