{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9b19f44463119f1ee6ca7113ec46b97a3796dee929a4d633b68c7f2b291a7544",
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    "signer": "0xE93BF52EF48746e1E02a0CE619fF7Bcd7145338d",
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}