{
  "manageEntity": {
    "action": "Update",
    "entityId": "937873299",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcf5f0c69c9013b67778d03dd2a30ba102faa5482393c15efbc38929ea5a85bcd",
    "signature": "0x3ad4fd74d173c4c84313f128f0083316da4360056af483281c372e443897eb1370373ec856cc5eb2d1effdd2fa7b1e9d09704b48c64c1f9de93607795fe5dbd61b",
    "signer": "0xC1C66590D148A8De13FF8a6cE8ec8a9D5FAd44c7",
    "userId": "937873299"
  }
}