{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcf1e169e38584978b81e7b11488782dc1e7461689d121b59a5e18bea737fc595",
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    "signer": "0xd5b09f4bf32b4750c05E869d0f7b6602bBD43699",
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}