{
  "manageEntity": {
    "action": "Update",
    "entityId": "618341133",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb778a645144c9271c8277b08dab141c9a5bb5edae8d0ef22f9bc834d556fe4ec",
    "signature": "0x18346d1e1b6d40ff44cab408c0dc6e1d6fcdf9d0db475bb192e8d1cbe3e4228759aaf888160e5012609bfd5351ecc02f70099746efba845f93048590c11c1e7e1c",
    "signer": "0x6E8Af7Cd3AA4a0117eD165a57738d0E2167aBd40",
    "userId": "618341133"
  }
}