{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x472da4360d1801bdedd00a3ff9e2a353518c809b3411005b12e192647ad319ff",
    "signature": "0x296643ebe9200869db2f02d7160fa6445d1a31cbb80897db76790358e6ddc5a96384bd89af6b640e9bc7d95ff4726e2d83c674ef50198058ece53c6ed49b8cf21b",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}