Advanced-Users-Creation and update of Identifiers

Number of APIs: 4

1. Create an Identifier for a user POST {{proxiedPublicURL}}/users/{{latestUserID}}/identifiers

2. Retrieve Identifiers GET {{proxiedPublicURL}}/users/{{latestUserID}}/identifiers

3. Retrieve an Identifier GET {{proxiedPublicURL}}/users/{{latestUserID}}/identifiers/{{latestIdentifierID}}

4. Update an Identifier PATCH {{proxiedPublicURL}}/users/{{latestUserID}}/identifiers/{{latestIdentifierID}}