{
  "manageEntity": {
    "action": "Update",
    "entityId": "423895393",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8eb7455f74fa46143350faaf14282285c4e3c1e9b75244d3430239c46173bd6e",
    "signature": "0x7f1c6b39e66553a81e887c8f1be0f63c1f1480bdd0e59e6dc8c279bb015733f91e8d0dfc264ba210c9c29f0fbc964a192b1545266f2baa8c00e778f3ed60acc81b",
    "signer": "0x7484CfBecBcdF6Cf4920CCee5d5A0B165C2187cC",
    "userId": "423895393"
  }
}