{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6e5eacef49be83d67421c9c671cc5ff40105947e3d8edd1d7efc5b723472fce3",
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    "signer": "0x7932207ADfC101b8a1E69c00e026dadE1BE6Eb9D",
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}