{
  "manageEntity": {
    "action": "Save",
    "entityId": "1696673338",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7a72bf29b7a3ec9a0fbe2739958e75466cd60fcf467b102675adc3fac23bde86",
    "signature": "0xae0af533ceb94ae74883e8f0ac7469d435f84c02fe242e8acb3f6667a3627fc368ed48ac527b059ea11430e818ddb2e932a96070223b70327bf40321dc39d8801b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}