{
  "manageEntity": {
    "action": "Update",
    "entityId": "407046354",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf8c3e1f13197ce63dffea4bfd107b591001064a2bd0a4d07186ce54e4421b997",
    "signature": "0xd7016078eb83c5f0c7f92b42de8152b7ecb6236f453490f2dd059eca6782b2ea68dcdaaf3136117ca261e2d6231280347fb177ed4c542e48c23e9d313045db001c",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}