{
  "manageEntity": {
    "action": "Update",
    "entityId": "799571887",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarl4vqlh2teh2xef3g4e3yak7za7tpnu5l2qy56jlbls74tzgnovq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":442302854}]}}}",
    "nonce": "0xa8ed4fe1b3b32aab9b67ed8f79cbc696dd82d367ab0a9697a796bd901f2f4422",
    "signature": "0x8e11641084ce8a58f96ab39ae66aec6c6a52f3d62b436cd6cab975f7e10438bc087081d6a62d53e211c03955aa6692676478a1f1839f0069258a4be4b8defe041c",
    "signer": "0x75ACCD4160aaada206b4dCfA68E88187C9ba9A0b",
    "userId": "799571887"
  }
}