{
  "manageEntity": {
    "action": "Update",
    "entityId": "328634906",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4e30c807cebccd5284ae893ec662e4b4ec5dacf36a05ee5a70369d2bf9fe3c18",
    "signature": "0x853d71f706fff4f504cfd7b063bc4125beebea0a03c94c12c7ef4b9261ebf703550d7e65383e5c20511dc1dfe66e59d0b77a25daa527193f68dc00af9aa607111c",
    "signer": "0xE5379bfbA21050bbFd5a8B9B37aA777B37D585f4",
    "userId": "328634906"
  }
}