{
  "manageEntity": {
    "action": "Save",
    "entityId": "246431344",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xca84282a05173c9a922e69a03f22d38bd0211419e8e8cda400e3453249dbaf92",
    "signature": "0xed77f7f508eca74fa887133ee31c02fbc021161f207944d93c5f6305d0fd9b38094964be250edc536d1839968384a897c3ecd6de604da35acc50234bacf18d5f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}