{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x114e37c6f461b6fd53c63e7678ea058d9c391135f90edb60e23d6407866a9f51",
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    "signer": "0xe5404b7381e209b65A80d6AF2773cEA4F93E4408",
    "userId": "232176437"
  }
}