{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0e1a4d5b2378d3db40693cf4e814c490a4720c0604e16ed7c08568b642fa3a32",
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    "signer": "0x9bBf376f191C68C84814Bc162E265A44c7f06170",
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}