{
  "manageEntity": {
    "action": "Update",
    "entityId": "531781827",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbc284e7163d0e7bc0b16e131ddd384a7c1815dae0b964a7ecec9e8c1d9011745",
    "signature": "0x30e2567e5c1eee4f677834d06906e3990e2efc3e3c6214ffcf69a5808d470107668643f336f6887f437e6c877168079291bd8e4976922d4ccd42ab060bd717321b",
    "signer": "0x6CCB8A92A20EC60B9775E88e0B43F78bC2F2290a",
    "userId": "531781827"
  }
}