{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x178b19e63bda26da5f0eace17fd47da0b3fd7f04405f432603f70a4003e2398d",
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    "userId": "245020470"
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}