{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x012a53fa9d686604e14f0bb2c3cefaad2b6a1e3f07ef97b132afbdd8f8e9b840",
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    "userId": "570701364"
  }
}