{
  "manageEntity": {
    "action": "Update",
    "entityId": "771510116",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierau6p2u6mbab6tazsslrf74jng36iwi3b6fm6v6f4inxfwb6or3r6q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1092092264}]}}}",
    "nonce": "0x44a9cce7cdaafc10b2c9970856805996d03ac7be31b493284f8a7d597b7777c2",
    "signature": "0x0a8b00307f8edc518fc97f999e73a0221ecc0f0eded92ec4641e52020ebc996c02747f1b9f9e71029bc3aa602ff77d27a6d653c146d014ff60d62d82c92fa86e1b",
    "signer": "0xC885a472e6d981C76180799a4FB8Ff5aFd08f49d",
    "userId": "771510116"
  }
}