{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x278eca914cfedb6f33b78d767b6686035a9455aa6abffbdf804272aebdaa846c",
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    "userId": "451290729"
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}