{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe782bd8c5a6af1b44211132ed028d8bc0f779b08b6af3caa75b971730d1f38a9",
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    "signer": "0x7C5d61D14c1653440D33A4BDC81c9B2CD9C4e64D",
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}