{
  "manageEntity": {
    "action": "Update",
    "entityId": "721302394",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x091217bcc0e640b4f29f41d1fab7efe978147246ca95f42fcc36e951132aed3e",
    "signature": "0x6ea33dfbb09a604db0f34773569cf279f75e4bd9e7adf08b4fdce3d123cc09452c641baa16b557e931b83676b823432be95d04757098933a1a6729ee0563909f1b",
    "signer": "0x2DDabb8ccA44974B42FDAf7c2626747b5bbe12F6",
    "userId": "721302394"
  }
}