{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x145f4bb31230a9348fcf59ade8f25aaa4aab04362dcc13948873bce404151329",
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    "signer": "0xeDeb1418dA8aD7E42414efb6741775c64Bf37e61",
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}