{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x806dad293d2d0b738a5707bb841224c7c10227386be732b29b90bc77348fe5e6",
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    "signer": "0x303fD6F7668Ad0AD901434B85eF391E249785A2C",
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}