{
  "manageEntity": {
    "action": "Update",
    "entityId": "742040491",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4fc4f449faa970d4eb53460faf8b5554c0cd7108a1fe92ba2204f5d7119d6c1f",
    "signature": "0x86cd47ea8839a863d3b502d523ab1056046c12a03374ed6036567db5b9ca62d051e60d936284580a26f97516ed524738cc56ef5e431b2a9c1e95c7796cdb8f851c",
    "signer": "0x3CbD0Fa44F7D10274036F2727a02f54a8C26eCE6",
    "userId": "742040491"
  }
}