{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3d199d7cb7f63b49a3896aebd063a27d9bc7861084b9d5b9c30a60550dc4b602",
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    "signer": "0x3717B58DF0fcf719037b55681bee91522D43a0f6",
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  }
}