curl --request PUT \
  --url https://api.gleap.io/v3/message-templates/{messageTemplateId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'project: <project>' \
  --data '
{
  "title": "<string>",
  "content": "<unknown>",
  "lexorank": "<string>",
  "isPublic": true,
  "users": [
    "<string>"
  ],
  "attachments": [
    "<unknown>"
  ],
  "actions": [
    {
      "type": "<string>",
      "data": "<unknown>"
    }
  ]
}
'

{
  "updatedAt": "<string>",
  "createdAt": "<string>",
  "actions": [
    "<unknown>"
  ],
  "attachments": [
    "<unknown>"
  ],
  "isPublic": true,
  "users": [
    "<string>"
  ],
  "lexorank": "<string>",
  "project": {
    "isValid": {},
    "createFromHexString": {},
    "createFromTime": {},
    "generate": {},
    "cacheHexString": "<unknown>"
  },
  "content": "<unknown>",
  "title": "<string>"
}