{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe223de1a7ad36fdb4df7c32b45915757006fda20f8daa04bdde10127b969d8b4",
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    "signer": "0xb69C788c7cbc7dD9aBe9E91477F694152BFa6a5c",
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}