{
  "manageEntity": {
    "action": "Update",
    "entityId": "963175434",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9604350a0df648846cfc934061b4046d999b3a7d227e3ebdc60e2586b16bd4ab",
    "signature": "0x5e317e8f44ad7f1241b1d30dc6464cffa289686dca9a0343313041c079cc54b30c47418e283a434467edf58d1c45be088fa55ead2c32ad398a1adb8db8225d821b",
    "signer": "0x19B1902e8315D7428495E3F505be756A14C14382",
    "userId": "963175434"
  }
}