{
  "manageEntity": {
    "action": "Update",
    "entityId": "552421234",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratrevmh36oqbizncipeukylapfz4aoc6zetodxqlv3b6plzkerb3a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":215176869}]}}}",
    "nonce": "0x2227166e0ad049545425965d5f36c40fabf6263afa3b51ae353e173b33165768",
    "signature": "0x46e0e7572ae673276755f21e5f10847f810101ebd21d1699845f48025cf1100c58c893e3c8d2150c1368a6ab6407fddb55f3c94d33aa220e0773e39b526baafa1b",
    "signer": "0xf9B2e6c4AD8D7302B8CD57332e90D0C18d7C1522",
    "userId": "552421234"
  }
}