curl -X GET 'https://api.example.com/role-assignments?membershipIds=mem_1,mem_2' \
  -H 'Authorization: Bearer YOUR_TOKEN'

const axios = require('axios');

const { data } = await axios.get('https://api.example.com/role-assignments', {
  params: { membershipIds: 'mem_1,mem_2' },
  headers: { 'Authorization': 'Bearer YOUR_TOKEN' },
});

[
  {
    "id": "ra_123",
    "roleId": "role_456",
    "membershipId": "mem_1"
  },
  {
    "id": "ra_124",
    "roleId": "role_789",
    "membershipId": "mem_2"
  }
]