{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xceb7585672d0bee50ea31eca960fcc21dc3f335d63dda95a3b28b59f0a13420c",
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    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
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}