{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xce2d30834375ffdfa1e8c2dc11abc444807519d25ab75f565e84f46b9533eaff",
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    "signer": "0xf6c9943016137F3054658e7E14F51B6d271aC325",
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}