{
  "manageEntity": {
    "action": "Save",
    "entityId": "124273",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc847a0df5b18b17a05eb7bccaa6c338a4ce467cc7f431570a818720594d8b688",
    "signature": "0x0f5e50f0650774fce81ea93f806762c3788d3ea1352bfcf2f1ab8c783c4a5c8a10f674c823e8a624652da126953d1fb47269b3fae35df4177a20b2044d7d67f81c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}