{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9a2914887444b884822c0a6d49e4d63a5650416aff6ba886c09f287c1aa779a3",
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    "signer": "0x100d95350871Cf056Ab8D2e2e129b8184f54C891",
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}