VALID request examples:

{
   "collection": []
}

{
    "collection": [
        {
            "collection": [
                {
                    "rule_id": 5253453,
                    "similarity_level": 15
                },
                {
                    "rule_id": 444487,
                    "similarity_level": 25
                }
            ],
            "type": "INCLUDE"
        }
    ]
}

🚧
To obtain a list of Lookalike Audience IDs, use the Dictionary endpoint: dictionary/lookalike_audiences.
To create Lookalike Audiences, use Backstage UI.

📘
Pixel Lookalike Audiences support a single similarity level of 5.
CRM Lookalike Audiences support a wider range of similarity levels - see: Lookalike Audience Object.

🚧
Audience Targeting does not support a PATCH operation - the submitted values overwrite the old ones.

📘
For a successful request, the same object is returned in the response.

INVALID request example:

{
    "collection": [
        {
            "collection": [
                {
                    "rule_id": 190356,
                    "similarity_level": 15
                },
                {
                    "rule_id": 232287,
                    "similarity_level": 25
                }
            ],
            "type": "EXCLUDE"
        }
    ]
}

{
    "http_status": 400,
    "message": "Invalid input - Exclude for lookalike audiences is not supported.",
    "offending_field": "lookalike_audience_targeting.collection[0].type"
}

🚧
Lookalike Audience Targeting does not support EXCLUDE.