{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaff87ae20dc725c8286c71e35d2c66ce51fa5d4785d5a62e8f0e90874ef6a025",
    "signature": "0xd5f6a566db80ed52b3e051097529ac65396c878ae900e751cb41221ab7557f7a3dca7b9d32eff15570e5fa8822477c4f34a4f87b56c85b82f1b30dd78f24354c1c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}