{
  "manageEntity": {
    "action": "Update",
    "entityId": "598394819",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd72950fd94201d38d5720ba2e1be6ceaa2f9026822e859055afa9e06fb66e4c4",
    "signature": "0x14ca2eb5deaf8a411ca2a5315d587a82aa084b7fd17639bb9107081f399cc6627b6193bf9e1b3e662e186ff956b3c82581a34c3616d3b532f3cb29f80df14b761b",
    "signer": "0x2F87B1486fdD89eA9502284F66715d3f10DF722C",
    "userId": "598394819"
  }
}