{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7f1af6da8e825de371f864a0635fce66251d12fe080ffea6fec75b71474dfbb9",
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    "signer": "0x210d52C16669FCb751d42D689671e3f6176C82fD",
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}