{
  "manageEntity": {
    "action": "Update",
    "entityId": "753839306",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc23c1e9b3303cb4796a293f980032d8fda0c424369b6a6f54db9cc30e78db737",
    "signature": "0x806a00bd007d3ba78b326c6275c2f6111ec8ca2cd95af7ccf318740644b5ce3506e5b58214fef9f92442102bc8bdb64776f11fc8086e0c2c4f555cb2a5a800671b",
    "signer": "0xabb199c8eb8F0cafC0d96cDcCd86687cdf1B6494",
    "userId": "753839306"
  }
}