{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xba3f35f57aad5e1c4af99229b037de91e7c05c7ce17febb6a77489684eb030f0",
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    "signer": "0xABf3f4FAfFf64E1b7d8991E33cF7EFe06FA0EA0C",
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  }
}