{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbd9d85966cbbc3d37512ed66333de5dc90466c974b4682f1d080487a8e2a4185",
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    "signer": "0x436348f483C2aeabDB9499FBa58fb6E1ECBAC2AF",
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}