{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xaae886efdaf7f85c28942512cdde36c010d71941317646c4644aa7ef86ebe366",
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    "signer": "0x339Fba6F655c03B4FBDe23334784B000e4969E03",
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  }
}