{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa3a77b81d82531d51aca11cedcd2465c67fcb952b80f950fc3a7ec795eb35af7",
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    "signer": "0x8fC311242F8bABA107e153Fa6BDc59e412be7A61",
    "userId": "257893262"
  }
}