{
  "seller_id": {
    "is_mandatory_field": true,
    "type": "string"
  },
  
  "animal_id": {
    "is_mandatory_field": true,
    "type": "string"
  },

  "title": {
    "is_mandatory_field": true,
    "type": "string"
  },

  "price": {
    "is_mandatory_field": false,
    "type": "number"
  },

  "currency": {
    "is_mandatory_field": false,
    "type": "string"
  },

  "is_negotiable": {
    "is_mandatory_field": false,
    "type": "boolean"
  },

  "listing_type": {
    "is_mandatory_field": false,
    "type": "string"
  },

  "status": {
    "is_mandatory_field": false,
    "type": "string"
  },

  "thumbnail_url": {
    "is_mandatory_field": false,
    "type": "string"
  }
}