{
  "manageEntity": {
    "action": "Update",
    "entityId": "491375222",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8009caac48a70dc6e4ccc8bcef532f339da934929845c4cfc31f1eed17836ce6",
    "signature": "0x649c607a1eb74eb67d27b2891670dcde98e9baddb718c2b5e1f607d20282553a24f963be23f3bed83f41dceb12e933e1b528e0dd74d0d9dc1c66f8bf0eb93fb01b",
    "signer": "0xc7eCAd44714A236078c716E099089D001F140d9e",
    "userId": "491375222"
  }
}