bloodchen i think is possible with a request to posts API, that have relationships with likes:
"relationships": {
"user": { "data": { "type": "users", "id": "1" } },
"editedUser": { "data": { "type": "users", "id": "1" } },
"discussion": { "data": { "type": "discussions", "id": "3" } },
"flags": { "data": [] },
"mentionedBy": { "data": [] },
"warnings": { "data": [] },
"likes": { // <----------------------------------------------- likes
"data": [
{ "type": "users", "id": "1250" },
{ "type": "users", "id": "3592" },
{ "type": "users", "id": "4118" },
{ "type": "users", "id": "7529" },
{ "type": "users", "id": "8024" },
{ "type": "users", "id": "14035" },
{ "type": "users", "id": "28427" },
{ "type": "users", "id": "33479" }
]
}