{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6c8c35609274a3e51150cad67e7a5e44557c407a06e862bdf12475188b9e6fd6",
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    "signer": "0xF9aC4bf77f60929E1841E213DC24cB1f1A56CF5C",
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  }
}