{
  "manageEntity": {
    "action": "Update",
    "entityId": "910193359",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6d654e9ce69cf6894ca47ee7a071aa6bfd6ec83c4d33d0e74161ab7f1a7385de",
    "signature": "0xc4b9601bcd57ce250fccada5fe12e4dd051f7dcaff282e603ff1fbac907bc54c687d81ede52d37be364a84eebb8803436194df755161d5ea5b95382effe870f81b",
    "signer": "0x3D9f30130F21Da4B7aEFc8Ef62dB2784F4d3e594",
    "userId": "910193359"
  }
}