{
  "manageEntity": {
    "action": "Update",
    "entityId": "513521095",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x30c27254279425b670b6604bf928e92a66233d2c19c0124fff59159160e8088f",
    "signature": "0xa04ea8600077b5c4da5c23e72e22fc21d26093aa25958d68e301510e8ac2432c306a5478f19b370ac8f344ee1e8c7d8c23ea110f9ee4fb952666a41861f253f41c",
    "signer": "0xb8CF893bedBeC61F25914474312c4fBB6929A5A9",
    "userId": "513521095"
  }
}