{
  "manageEntity": {
    "action": "Update",
    "entityId": "49877197",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcaffecb3e4878795d995dfbed7e1cb839fe9ddfebb49191983afda0e2c462612",
    "signature": "0xc6515a591af592edafad6f22af53098d0c45cc401df5731cdcab260478559a1424ba268ee929a4816def41660b1d8e784958f26d0cef82b7a1fd5c3b9d94f8cf1c",
    "signer": "0x1D6CD0F4a3748C8b15b27cE142fb879600cd33f9",
    "userId": "49877197"
  }
}