{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb465b28defb5cb6b326e2ec227619a22b89e5ba648b0ce5e96650efb8e8db94d",
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    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
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  }
}