{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa21e9cbabbef572077e1b3fd6b17555e62fd5056bd8d54afe6dcafc108587bb8",
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    "signer": "0x40f9c8F93a5aDBc620CB9B7707fAbcbA2fDFaBbA",
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  }
}