{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb443b6c65aa1bdef2a1975ff53ee756f586ab7bf4942d441eda31e2207313549",
    "signature": "0x5bfb151a106e2718290c94d9beeb16c92a802520541f5652cdf1d045a68232573d67bda6e8436e694b8d93b6e1344aba1969e98064987d4705440a2d6c30aed51c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}