I have deployed Magnum-CAPI for testing and things working fine but just noticed magnum creating a bunch of users and have no idea what they are those for? This list is small in real I have 100s of them. is this normal?

# openstack user list
+----------------------------------+-----------------------------------------------------------------------+
| ID                               | Name                                                                  |
+----------------------------------+-----------------------------------------------------------------------+
| 01ff85efed43419486558864e35f39cf | 90e763f2-c566-4c1f-92f0-e36be5933538_08cae850a5bb47d998da180a7f0e2660 |
| bd8c2337df0a451da92732aae1fe5f68 | abf42808-d67c-450e-88e0-a20e65f35232_08cae850a5bb47d998da180a7f0e2660 |
| 81d6c4c23bd84d62ab3422f109ced3d5 | ee1b8a35-d23b-42eb-9574-edb6562b4147_08cae850a5bb47d998da180a7f0e2660 |
| 988550004ee3413eba2bb20f73f24013 | 8eaf2db3-d13c-4849-a517-5528219fc32f_08cae850a5bb47d998da180a7f0e2660 |
| a50a0b596a024edb8c4a9bae05d1844c | e7194788-4ae5-4e17-9c48-fa3bf4e65016_08cae850a5bb47d998da180a7f0e2660 |
| 664e7708f64f4b9d8071dac8d9fc580f | ea999930-8d10-42b2-ae31-2236fffb07a1_08cae850a5bb47d998da180a7f0e2660 |
| 67de8c5761564fdbba998cc7c2a14948 | 0ef17525-9ee5-4416-b3bc-f6ccd5a1f3b0_08cae850a5bb47d998da180a7f0e2660 |