{
  "Sg721": {
    "creator": "stars1zjjqxfqm33tz27phd0z4jyg53fv0yq7m3945le",
    "description": "test coll",
    "image": "ipfs://test.dev",
    "external_link": null,
    "explicit_content": false,
    "start_trading_time": "1676898000000000000",
    "royalty_info": null
  }
}