{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xad8cd88ec051d827ab53f648ee8f2ca3b2f25e703d872d7a6f0feddbf13be514",
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    "signer": "0xb23F7ACBa14520B7919f1C18a87b3d90246cD0c4",
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  }
}