{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x352eb2446805951c6a1bd4253999aebc65c8e6eb2a5ca2321890a4a03f489a99",
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    "signer": "0xe1bD810eC1F3B2421a94AEC1D909e87d69795851",
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  }
}