{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcbde8fe89820c79611d989e037bf8883a0f5f4284ed2942192e4b61af1e7e557",
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    "signer": "0x5E7423d87395641C871314CA5efA9A3c5A5fb3d1",
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}