//ADD A MESSAGE TO A TICKET
url : https://site.io/public/api/support/tickets/messages
request[POST] :
{
  "ticket" : {
      "publicKey" : "6c0e90fb523d96ddedabc1aeb261307ab6c5329fb3b5799ba5f106b6cd5e0ea9",
      "message" : "reponse"
  }
}

RESPONSE :
{
    "id": 12,
    "publicKey": "6c0e90fb523d96ddedabc1aeb261307ab6c5329fb3b5799ba5f106b6cd5e0ea9",
    "subject": "sujet du ticket",
    "reason": {
        "id": 2,
        "publicKey": "34c99d5f29df52199668f81ba198eee36030a28ea4a66a2cd955e35e5cd7f94e",
        "name": "nouveau nom de ticket",
        "lang": "fr",
        "description": "nouvellle description ticket",
        "active": false,
        "template": {
            "id": 3,
            "publicKey": "060f317600889e21569b928b4e07d3a01e24fda6def0500b49830841f2d011e5",
            "name": "nouveau ticket",
            "customFields": []
        },
        "userGroups": []
    },
    "status": 0,
    "openDate": {
        "date": "2018-03-23 14:18:06.000000",
        "timezone_type": 3,
        "timezone": "UTC"
    },
    "closeDate": null,
    "customFieldsDatas": null,
    "priority": 0,
    "creator": {
        "id": 1,
        "lastname": "ESTEVE-VERMEIL",
        "firstname": "Lorenzo"
    },
    "userOrigin": {
        "id": 1,
        "lastname": "ESTEVE-VERMEIL",
        "firstname": "Lorenzo"
    },
    "usersIntervenants": [
        {
            "id": 7,
            "publicKey": "14a831edd0b7d72bfdd5fbc2e7ac7575c71bd84a25ca833a41e0c651df5479f2",
            "user": {
                "id": 1,
                "lastname": "ESTEVE-VERMEIL",
                "firstname": "Lorenzo"
            },
            "addedBy": {
                "id": 1,
                "lastname": "ESTEVE-VERMEIL",
                "firstname": "Lorenzo"
            },
            "active": false
        }
    ],
    "messages": [
        {
            "id": 4,
            "publicKey": "8637301d598ecdfd8f41fb8fc2941f75e869c2043e37c6d7beed60eb1b4fdd82",
            "ostDate": {
                "date": "2018-03-23 14:18:06.000000",
                "timezone_type": 3,
                "timezone": "UTC"
            },
            "content": "premier message",
            "fromUser": {},
            "deleted": false
        },
        {
            "id": 5,
            "publicKey": "ed186d843ba8b578fc338a1bc85aa9b5d0e570e91ac1ef86f11a0283f1340276",
            "ostDate": {
                "date": "2018-03-24 09:43:23.123561",
                "timezone_type": 3,
                "timezone": "UTC"
            },
            "content": "reponse",
            "fromUser": {},
            "deleted": false
        }
    ]
}

//DELETE AN MESSAGE OF A TICKET
url : https://site.io/public/api/support/tickets/messages
request[DELETE] :
{
  "ticket" : {
      "publicKey" : "6c0e90fb523d96ddedabc1aeb261307ab6c5329fb3b5799ba5f106b6cd5e0ea9",
     "message" : {
          "publicKey" : "ed186d843ba8b578fc338a1bc85aa9b5d0e570e91ac1ef86f11a0283f1340276"
      }
  }
}

RESPONSE

{
    "id": 12,
    "publicKey": "6c0e90fb523d96ddedabc1aeb261307ab6c5329fb3b5799ba5f106b6cd5e0ea9",
    "subject": "sujet du ticket",
    "reason": {
        "id": 2,
        "publicKey": "34c99d5f29df52199668f81ba198eee36030a28ea4a66a2cd955e35e5cd7f94e",
        "name": "nouveau nom de ticket",
        "lang": "fr",
        "description": "nouvellle description ticket",
        "active": false,
        "template": {
            "id": 3,
            "publicKey": "060f317600889e21569b928b4e07d3a01e24fda6def0500b49830841f2d011e5",
            "name": "nouveau ticket",
            "customFields": []
        },
        "userGroups": []
    },
    "status": 0,
    "openDate": {
        "date": "2018-03-23 14:18:06.000000",
        "timezone_type": 3,
        "timezone": "UTC"
    },
    "closeDate": null,
    "customFieldsDatas": null,
    "priority": 0,
    "creator": {
        "id": 1,
        "lastname": "ESTEVE-VERMEIL",
        "firstname": "Lorenzo"
    },
    "userOrigin": {
        "id": 1,
        "lastname": "ESTEVE-VERMEIL",
        "firstname": "Lorenzo"
    },
    "usersIntervenants": [
        {
            "id": 7,
            "publicKey": "14a831edd0b7d72bfdd5fbc2e7ac7575c71bd84a25ca833a41e0c651df5479f2",
            "user": {
                "id": 1,
                "lastname": "ESTEVE-VERMEIL",
                "firstname": "Lorenzo"
            },
            "addedBy": {
                "id": 1,
                "lastname": "ESTEVE-VERMEIL",
                "firstname": "Lorenzo"
            },
            "active": false
        }
    ],
    "messages": [
        {
            "id": 4,
            "publicKey": "8637301d598ecdfd8f41fb8fc2941f75e869c2043e37c6d7beed60eb1b4fdd82",
            "ostDate": {
                "date": "2018-03-23 14:18:06.000000",
                "timezone_type": 3,
                "timezone": "UTC"
            },
            "content": "premier message",
            "fromUser": {},
            "deleted": false
        },
        {
            "id": 5,
            "publicKey": "ed186d843ba8b578fc338a1bc85aa9b5d0e570e91ac1ef86f11a0283f1340276",
            "ostDate": {
                "date": "2018-03-24 09:43:23.000000",
                "timezone_type": 3,
                "timezone": "UTC"
            },
            "content": "reponse",
            "fromUser": {},
            "deleted": true
        }
    ]
}