{
  "manageEntity": {
    "action": "Update",
    "entityId": "510557963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb5a4c5754e646b0be151f6642e2a8cf5f7d5481aa4ef1f48b1a41520329a5beb",
    "signature": "0xa7b1b0e988ff74bfc4675bcb1b60ccd892371d923d6839bfe7975ec76495e732618b0518686a16489549971e437bc4a68b72a302997b2c52b5ea936caccf86231c",
    "signer": "0xDbaBCC061998306F9777E05fa9242fe9B5b745aE",
    "userId": "510557963"
  }
}