{
  "manageEntity": {
    "action": "Update",
    "entityId": "816155109",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x13c7c4f1d035f5250706d7e488d7ff20800f0453e7d2f9edf2b8b0af42e83954",
    "signature": "0x9e0c9c29ae26537fcc1ce36f7ac86bd401f273ce104cfef396e38e1514e78faf3150c0bbad11e2838fdd4f612ea6d471af596aac30a2f8690d137305744f9e441c",
    "signer": "0x8e6A86c6783FE9401aC51E281FdF8Ba2E722d0b5",
    "userId": "816155109"
  }
}