{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe5b612823c623dfc23da7dd1b05bba31c0fe9e4ed20b3056e9e6615080fc4290",
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    "signer": "0xaCd3122E4721AD0f883028Cf1A939087aE84D9D8",
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}