{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb890950cff69062433a9cb6eec84ae7e78df9a7e7cbee977239e69b20429259f",
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    "signer": "0xcd6e4F197353125a5AbA80145Edf0eaB92cccEB1",
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}