{
  "manageEntity": {
    "action": "Update",
    "entityId": "311259731",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xec5bf10c471a74f1a3b1eb68f574bffb74bf7a9663e3c81456a5d5ab685e390d",
    "signature": "0xd6f0c8a2c98d8147228e7ac34c2ff072c6a9599ff5b53845526c59dc277e152e57f7a2ae05ae9b807ef6257602f8a5f54348cb7b6c9f399c9bef25285d089f891b",
    "signer": "0xd3cFd8491F92ff012f5bcB989eDf511Ab9A99891",
    "userId": "311259731"
  }
}