{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf4d6063320b21aca7c8261d71b46a47eb1144191b9b353b39a28a1281c185b38",
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    "signer": "0xF59599790AcF42c0FE746F5DDa3A9cc2AB86327a",
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}