{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1890c367f0abc5fcbb0dd8500d0a8bf47a09e30086004a23a8d4d8478ff086b6",
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}