{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x98c16d011eff96e1d3e88146684cd115d12087bccc79e196f905c18ac8ec23eb",
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    "signer": "0xeD9656baf818EAb27A71cc343064645430D224ca",
    "userId": "541929255"
  }
}