{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xac138a22bdaf9874bbe81f52329592a324a7284854836cf472ae8ad2d1efc29a",
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    "signer": "0x6164d22C5753c6E9f1ec157dDef5A3C606E2f10D",
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}