{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5e1cfc82fc698368185bc3aa77a23cef7d7b1d30a18050651d22d90c8dbb4aae",
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    "signer": "0x3D51463c7911321AEe930A8cAB1c4d5fD6C541B0",
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  }
}