{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xafc2f40192492892849f743d3387023df3df0ac9ba8867e2dd2e1cad69efd163",
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    "signer": "0x05368a8B3e1432dE0b2804d9792314E86348918F",
    "userId": "270874896"
  }
}