{
  "manageEntity": {
    "action": "Update",
    "entityId": "690748054",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x64a907eade0e7a98ba9f1db06a91893be321f0e6b2baf6c202dd77213b083dc7",
    "signature": "0x433ab0cfdd01d1f171e7ba404c437b2f0e5006241b3af16be215260773903908365c793fa7ac06155a09b5b892e64edcd2d057ce60c984797d645603604b83231c",
    "signer": "0x83f598BB5B9CE7ee1E5ac41f7a748645Ecfdc394",
    "userId": "690748054"
  }
}