{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8182fba4e83a66a07c7ae1b3cbdc2bac7dd8cfbc42709a55a763d8426d265ac6",
    "signature": "0x19a8431034719bca0d95d35308c6d266abd30dac45c4f38844e6aaed6036fe5c1722c8d85e494a972faa9be13b3f8e769fe5e2a866089c28658525e65bb40f5f1b",
    "signer": "0xaC67ED11738FaA2D017dD8790566a2Ff48B3eC99",
    "userId": "170633804"
  }
}