{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd1b94743a119d3ad0597767cd0fab67ca8cc62e9cc89f08cae667f98e6eae4fd",
    "signature": "0xc143f612af5a581d0ee6bb580b487d78d5184e5e9e33708b2fc8f306eee317086d3c9dfffbfa227543fc5f9f36525d4454fdabaddf987943b5353952db2fca8b1c",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}