{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3bf5c713c53fbd076f6a77b43845e45f0e7cc727f998c56afddf06a41a000ed2",
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    "signer": "0xF6f9B38959b9BBB3b5FeC870eef2C3309ac8acf9",
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}