{
  "manageEntity": {
    "action": "Update",
    "entityId": "648790234",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd81e9a7fa9995531a10fae49e1e8dcc053b09ba1060985dee7143476ac14b54d",
    "signature": "0x7cae2b17592557fb04b6390661ab09f9dbf67c78fe186856109b972ac48b2ac07af725d663dc87d4e0b2c57b93c4b67fefa695fb7e8ec637d4ed9daadd519bb31b",
    "signer": "0x5FAebc5457E64298d2Ef1813dbfccc0F5bB3C4E7",
    "userId": "648790234"
  }
}