{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe8faa04dd3abffa9ba67c27ca60a32d67437723eb35f47be5f6e30fe1ae29163",
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    "signer": "0x262A4EeAc7fAD5a7F8E121A7f63cD0B7380A7D64",
    "userId": "288707748"
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}