{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x21b2bea1fcff428f6b4178f584269de7ad14afd119743319645f1a5fdd995060",
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    "signer": "0xd5074a35b24E4A0a285635E98da147d8AfEa7A5d",
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}