{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd58e6c86452dc3564d4a60ff3e7b4ded6f9c7733445908bf8527f8bc96f46f4b",
    "signature": "0x56d14ce8457ff614321cf53d80b2a9efaffb8106e3a5792761507db00f6ab37313b784d95bbc4da0bbf0e81d883eebf0761ca0875b827171382888f71230f2291c",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}