{
  "manageEntity": {
    "action": "Update",
    "entityId": "192398322",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe5e8a89f5662046d67cfb704e3e88204e46808bf5558d65afe8fd486f238f801",
    "signature": "0x9b00e234661b4e7c9894947853e74c725aa4f785b6e97f40c01e91bfb0646bc97821c3240c0b7a2ff80d3e8c98ce12a20fd7bc2effceb9030d5c7b0255910fcd1b",
    "signer": "0xE6F0C0996337D1CB10ff5158F0096899F6270aB5",
    "userId": "192398322"
  }
}