{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9ff777fa7afe6cc1f27ed2d3c424b60cf0ec80567dbcb62e490b95dfc836e141",
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    "signer": "0x3e48DC5763519fbdE0A26db7C59929E8Bb6B8Fe2",
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  }
}