{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd97ef89b984aaafe7ab43c3b3fa9db85161517e0f976a99dbc8567ce3c14a35e",
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    "signer": "0xdf5D006aE5C17a1EeBd08e6A3634A1779D76B91a",
    "userId": "354951137"
  }
}