{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdb094d3d6b4e691cfc662885ec8eea71d95edebe3b9d7e9fcc9b317d21b8da6b",
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    "signer": "0x2FA75Ee1CfF2B8dA827A4774B76f7246Bd0Ac5E4",
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  }
}