{
  "manageEntity": {
    "action": "Update",
    "entityId": "19049354",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7khbgh3y5jsizhscw2fowhsvqdlxawhiqgsdbuovifygv3xqlgta\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":74164}]}}}",
    "nonce": "0xcaecb6f3820d821794fb3dd806277705496532dbb09e9914f9985083e5e670e6",
    "signature": "0xbb7a54d2f50609aadaed9e37e08f60de9900a732082923bd562685769e6f1cce1fd53e4689137fd56b932a910fb1d835b61eb261ec4759730463248d8245bff51b",
    "signer": "0x0f8C1E55ed97EA0E984aCB529B16f24489c6D4ee",
    "userId": "19049354"
  }
}