{
  "manageEntity": {
    "action": "Update",
    "entityId": "616148550",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd26853310102a57084d93f7c0388a402055e3c8ca3f5e24bc9bb9c6c71cf1023",
    "signature": "0xfe7925e14da5837c153e5940f191ef9449f9d65ad1ee10432e64c7bf64473c0f46a4f0f3b59c525cfb4970d15079d65a02bc456f97e6690ed9774c2c3f113b641b",
    "signer": "0xcec5aE20169206909591985269fDaEB3B9c622a9",
    "userId": "616148550"
  }
}