{
  "manageEntity": {
    "action": "Save",
    "entityId": "536988672",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcf533ec5b1b38e625616650de790d1f43c058ed060444fb21614291e3b3380d7",
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    "signer": "0xbe465AA25655a6E6b63480fC80284D554EcB33eA",
    "userId": "334539"
  }
}