curl --request POST \
  --url https://{appid}.api-{region}.cometchat.io/v3/messages/{id}/thread \
  --header 'Content-Type: application/json' \
  --header 'apikey: <api-key>' \
  --header 'onBehalfOf: <onbehalfof>' \
  --data '{
  "receiver": "<string>",
  "receiverType": "user",
  "category": "message",
  "type": "text",
  "data": {
    "text": "Hi Tom!",
    "metadata": {
      "key1": "value1",
      "key2": "value2"
    }
  },
  "multipleReceivers": {
    "uids": [
      "uid1",
      "uid2"
    ],
    "guids": [
      "guid1"
    ]
  },
  "tags": [
    "tag1"
  ]
}'

{
  "data": {
    "id": "2",
    "conversationId": "superhero3_user_superhero5",
    "sender": "superhero3",
    "receiverType": "user",
    "receiver": "superhero5",
    "category": "message",
    "type": "text",
    "data": {
      "text": "test     hello",
      "metadata": {
        "key1": "val1"
      },
      "entities": {
        "sender": {
          "entity": {
            "uid": "superhero3",
            "name": "Spiderman",
            "avatar": "https://data-us.cometchat.io/assets/images/avatars/spiderman.png",
            "status": "offline",
            "role": "default",
            "createdAt": 1638361550
          },
          "entityType": "user"
        },
        "receiver": {
          "entity": {
            "uid": "superhero5",
            "name": "Cyclops",
            "avatar": "https://data-us.cometchat.io/assets/images/avatars/cyclops.png",
            "status": "offline",
            "role": "default",
            "createdAt": 1638361550,
            "conversationId": "superhero3_user_superhero5"
          },
          "entityType": "user"
        }
      }
    },
    "sentAt": 1638423490,
    "updatedAt": 1638423490,
    "parentId": "1"
  }
}