{
  "manageEntity": {
    "action": "Update",
    "entityId": "477491095",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieracfv7dbvxbjvfndyzmnxhdclycdrystdekewztn6g6im3vy7uc7ea\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1369606426}]}}}",
    "nonce": "0xbcba65c3a36bc7aceae39395893c8192fb011d2ef35d789400e020d00e8742ae",
    "signature": "0x982461da9657bfcb2a0bcb26e068fd1a641c8325652c779f01cdda471b04668e3dccd0228a9e0307804dd91c414e0dcd64183e6e180f5362530db1409424c72e1b",
    "signer": "0xB1c50FAB585dD1D7d465BAa23fab452F59F1DAc2",
    "userId": "477491095"
  }
}