{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4b48b05c587b4a9b6be285ec90a49f5f8d461402fc8ddfcb4ef8e6c373abc18c",
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    "signer": "0x6164d22C5753c6E9f1ec157dDef5A3C606E2f10D",
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}