curl --request POST \
  --url https://instance.prod.onboardapp.io/v1/cases/{case_token}/comments \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "body": "<string>",
  "type": "Comment",
  "mentions": [
    "<string>"
  ]
}
'

{
  "data": {
    "token": "cmt_7r3s1t5u",
    "case_token": "<string>",
    "author": {
      "user_id": "<string>",
      "name": "<string>",
      "initials": "<string>"
    },
    "type": "Comment",
    "body": "<string>",
    "mentions": [
      "<string>"
    ],
    "reactions": [
      {
        "emoji": "<string>",
        "user_id": "<string>",
        "created_at": "2023-11-07T05:31:56Z"
      }
    ],
    "created_at": "2023-11-07T05:31:56Z",
    "updated_at": "2023-11-07T05:31:56Z"
  },
  "meta": {
    "request_id": "req_9k4m2n1p3q",
    "page": {
      "cursor": "<string>",
      "has_more": true
    }
  }
}