{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8c66d52ec5b9744898705850a824fb54d514a339cde51f2acd804d48482fdfb4",
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    "signer": "0xDB8E6C52ccD85f623587229edfe3f082A690a054",
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}