{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbebc039db4b44425e82288a38bb297bd4770c174103afbd7df1bf81cb1ac99ef",
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    "signer": "0x78d65aFe46082ee73a9b9098e0146E88695A642D",
    "userId": "195545022"
  }
}