{
  "manageEntity": {
    "action": "Update",
    "entityId": "754088057",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe2ada9301b2b2e1037f0ca8e56b5433c13a32e24112b976da1dba2dfceabaa24",
    "signature": "0xe29255bd07579296bafa8856bff1f982c1845dcb5526a9b8cd6410b8bd609d3a38bf1c5cd4fee26558b694f387ef915c3e720df663c7eea27554d5960680ab891b",
    "signer": "0x515399926c2FCd6970811C1337c62fF3DDa03174",
    "userId": "754088057"
  }
}