{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb45d27701111a74e32077da44cf1dfe166b57fae9ae8d1e406cafe8fe55073ff",
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    "signer": "0x3A218Da180AFBa06BC9AE0b28E50Cd581dEc5693",
    "userId": "632624994"
  }
}