{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x53bbf36cbf558614370dcaa9c017dbf55baddf0c4cbd264f56280e6e9b7e7e0b",
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    "signer": "0xb11A87421a60283b875d2F958D27356167224eF2",
    "userId": "858465138"
  }
}