{
  "manageEntity": {
    "action": "Update",
    "entityId": "358472473",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraaeuu5qwjx3wz5w2rc77ay5dhtpaoxzn6fsyuu7ghwj3cugyvml5q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1273638039}]}}}",
    "nonce": "0xcff70aa09ee37b6f0a236937a211883e33502b05b0d6b16fd93f23a81884e74c",
    "signature": "0x3120d0b15ee48572127165b98b59a227dc24c11e39ab60c684e14af8a12404053b22ab37a03aa9661760d4e632b0174fa803ac231b5b761843cb57266142edf21b",
    "signer": "0xB60F916E7a1c9269b7aB9CD83A0530780f4e42E6",
    "userId": "358472473"
  }
}