{
  "manageEntity": {
    "action": "Update",
    "entityId": "669620913",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6f54f844f06cc3cb4039bf481ab5f6d6d4a66eaed79c52c98afdd1dc5b091cc1",
    "signature": "0x5aedab16f63750a79653b24e0bd5ae48900c51018a5790e19dd85fa036a263e4748dc7a3426c04967e834277b8e88dbf2df716f0fe7010e75161ce50d9e051351b",
    "signer": "0x9CEefB86DB284E9B1bA68435A3553A17A6152550",
    "userId": "669620913"
  }
}