curl --request GET \
  --url https://varco-{partner}.musixmatch.com/distribution/artist/claim/{partner_user_id} \
  --header 'Authorization: Bearer <token>'

{
  "message": {
    "body": {
      "artist_claim": {
        "claim_id_list": [
          {
            "partner_artist_id": "123456",
            "partner_user_id": "123456",
            "spotify_artist_id": "4Z8W4fKeB5YxbusRsdQVPb",
            "itunes_artist_id": "909253"
          }
        ]
      }
    },
    "header": {
      "status_code": 200,
      "execute_time": 0.03
    }
  }
}