LinkedIn creative ad with an image and a call-to-action - linkedin

Question

Using LinkedIn APIs I'm trying to create a Creative Ad with an image and a call-to-action button like the following example from campaignmanager:
I tried many possibilities using Asset and Share APIs to create a dark Share but i'm unable to create a Creative with an image and a call-to-action button. The example in the documentation doesn't say if I should use ARTICLE or RICH shareMediaCategory. Setting landingPageUrl like in this example seems to have no effect when using from a Creative Ad.
I successfully created a video Creative Ad with a call-to-action but the new UgcPost API is only supporting AdDirectSponsoredContent for video.
Does somebody know how to do it?
Thank you

Answer 1

I found a workaround by creating first a RICH dark share that accepts an uploaded asset urn in the entity field:
POST https://api.linkedin.com/v2/shares
{
"owner": "urn:li:organization:1234",
"agent": "urn:li:sponsoredAccount:5678",
"subject": "An ad title",
"text": {
"text": "An ad title"
},
"content": {
"contentEntities": [
{
"entity": "urn:li:digitalmediaAsset:ABCD",
"entityLocation": "https://stackoverflow.com"
}
],
"shareMediaCategory": "RICH"
},
"distribution": {
"linkedInDistributionTarget": {}
}
}
Then I create a 2nd ARTICLE dark share with the thumbnails info recovered from the 1st dark share plus the "call to action" button:
POST https://api.linkedin.com/v2/shares
{
"owner": "urn:li:organization:1234",
"agent": "urn:li:sponsoredAccount:5678",
"subject": "An ad title",
"text": {
"text": "An ad title"
},
"content": {
"contentEntities": [
{
"entityLocation": "https://stackoverflow.com",
"thumbnails": [
{
"resolvedUrl": "https://media-exp1.licdn.com/dms/image/ABCD/feedshare-shrink_1280/..."
}
],
"title": "Click here to learn more!",
"landingPageUrl": "https://stackoverflow.com",
"landingPageTitle": "LEARN_MORE"
}
],
"shareMediaCategory": "ARTICLE"
},
"distribution": {
"linkedInDistributionTarget": {}
}
}