{
  "manageEntity": {
    "action": "Update",
    "entityId": "479281191",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4ee6d6527abc9962f76cafef2874361bdb6f0a4f3556c713d36292b4f93b65da",
    "signature": "0xd0e6f1a7ee87a4006df420e8b5887738c7f1d19134b4c45faa3c5a6ebdd4873603c81f102ec9d765674879c0791904d25b5ccef76b779eeeaf5ec871c1c92b1e1c",
    "signer": "0x14995EF7E081578e89142ecf60f9a1479060B1a4",
    "userId": "479281191"
  }
}