{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9cc36051dd96c3e7ec99083445f39625a454e6897b341bc2d25f32f53e0549af",
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    "signer": "0x996332682B8111bFf60d77f17304ce0311Ef3e85",
    "userId": "197159436"
  }
}