{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8e90acb08549459faadcd21725fff67d6ec871a2ac3c809e641f461c19acce9d",
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    "signer": "0x17107e419c414445bd739673071B5d474D7d2206",
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}