{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x92dbb5a9063a228d837f268f7fe31de0ab084e419e2a76827a60c9861b41e117",
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    "signer": "0xd58F382d75921256639182Ec33927455df4C37fB",
    "userId": "399419866"
  }
}