{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7626be48ca9bd081b4deb0a952c8bacce34689ac941a446e3a23eab855842708",
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    "signer": "0x55B320FE4ae0dC96fE927A1d4fA23b18d1874EF1",
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}