{
  "manageEntity": {
    "action": "Update",
    "entityId": "747576419",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8e7872d2a81f6f11eb7ffe76252a0cd69ed1923b44abd8b9ec3bba70a911f92f",
    "signature": "0x516aa4352f90a236a80d75fd441269be956a09a4d6f8e15b67ba4be40feeed7a6b8cd813379477e803d4d20dd9bc8f6248896494bc215e7453bcc163a9112ab81b",
    "signer": "0x0Eb68d1ceacF37AbB0D48503E66b8fF2c06E2fdE",
    "userId": "747576419"
  }
}