{
  "manageEntity": {
    "action": "Save",
    "entityId": "616921587",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x030c8ea96b26481fc8c62d6d2f8c886c1bb23be87d0b553a73bf834cf65da548",
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    "signer": "0xd85E4A094e4C057572A9D525C9737051A17ab609",
    "userId": "696716320"
  }
}