{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0a7fc4eedcdb5de01aba4ff0b08f324ef26c9de53f3dea9bf8d6ea9cdffe4809",
    "signature": "0xd146553a2fec0e02d2a6c2c6beeb69c99cd056c49f832fe0c9c1e4bf76b8f62e4b433dd0dc968152757a12a24c71dc5c68379e062c1550d07643faa60f8a1a311c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}