{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9c00469859c2213eaedc3c7491d0f62f41cd63501c7948105f1e1614032b1050",
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    "signer": "0x1684Ccb780324eAF03ad433eDF3a317Cb2FE3D5e",
    "userId": "69083966"
  }
}