{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7dce5e66ab7844ed847feafffa4ee308adbaedfcb2bc80103747e904a2821ae3",
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    "signer": "0x7c3B9B3693B703850eb45e650CCdF7EC9ABCcF1c",
    "userId": "297932125"
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}