{
  "manageEntity": {
    "action": "Update",
    "entityId": "344552512",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9bc812ac61b991166d77233507fec7f93db471781b9f2862e50996a5c26c548a",
    "signature": "0x5233c558f3ca9134f58578eadb3433471ba23400578d7cf5f8b97f39e15d65c24d207346fce5fa0a303157233c0ff0b6cc6ae7102807c092b800837eb22300721c",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}