{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6255bf0523fa23030afe6e28402b856d9e0b19722df9f27a2daa6c4404290199",
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    "signer": "0xb0d555a3bd382070FBB305CF4C389A6F7b3B0544",
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}