{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd1e05a885084ce4ee962c8a7c7edf9b04fe721386aa76232dbe57e8935dd2f72",
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    "signer": "0x665E1c9fF53dd815F3d2A622b5BE329e9633B256",
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}