{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x20eeceb59db26a55148e5f2446b1861d425b7467309ef95380f9b88d5d1f20b5",
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    "signer": "0x67cc99D80c366697AE8f8E8981c6447F3f87C15F",
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}