{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x588789bc1fb86b8375836f3b9583877674f6f8a440523c03247bc1e70e92a631",
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    "signer": "0x125A6d7FBb28E396C1125a533E5D1395A4854729",
    "userId": "297507654"
  }
}