{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9938a6d2be9df9bd1b1c4c7f85295ac9db5af2215165ce85c4e9abdd3d981753",
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    "signer": "0xcF7E6c02DA882ce2DA8a97BE0e9eE2c8c33C2675",
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}