curl "https://api.phrase.com/v2/projects/:project_id/translations/:id" \
  -u USERNAME_OR_ACCESS_TOKEN \
  -X PATCH \
  -d '{"branch":"my-feature-branch","content":"My translation"}' \
  -H 'Content-Type: application/json'

{
  "id": "abcd1234cdef1234abcd1234cdef1234",
  "content": "My translation",
  "unverified": false,
  "excluded": false,
  "plural_suffix": "",
  "key": {
    "id": "abcd1234cdef1234abcd1234cdef1234",
    "name": "home.index.headline",
    "plural": false,
    "use_ordinal_rules": false
  },
  "locale": {
    "id": "abcd1234cdef1234abcd1234cdef1234",
    "name": "de",
    "code": "de-DE"
  },
  "placeholders": [
    "%{count}"
  ],
  "state": "translated",
  "created_at": "2015-01-28T09:52:53Z",
  "updated_at": "2015-01-28T09:52:53Z",
  "user": {
    "id": "abcd1234cdef1234abcd1234cdef1234",
    "username": "joe.doe",
    "name": "Joe Doe"
  },
  "word_count": 2
}