{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9106d50cbacc59f0c8b21aed542ca93c0e695249e1ca3629e75fecd2ef52268d",
    "signature": "0xea9a565b14ae58603b36a68038787c7e6dee4f21311da1c9566c39e0b702fe0a5305b6bc9d2ad700ae26b9e784a7fe771a944fd8a7b9f9b84fe0c1b72d6174f61c",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}