{
  "manageEntity": {
    "action": "Update",
    "entityId": "477662771",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierahosjmvxmvo4gzi537bcsvqp7bvc4hrmhtntonzf3kza4derp45ga\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":781560851},{\"type\":\"playlist\",\"playlist_id\":1463865054},{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1117144910},{\"type\":\"playlist\",\"playlist_id\":216173241},{\"type\":\"playlist\",\"playlist_id\":1885431838},{\"type\":\"playlist\",\"playlist_id\":1126320599},{\"type\":\"playlist\",\"playlist_id\":4629},{\"type\":\"playlist\",\"playlist_id\":794139884},{\"type\":\"playlist\",\"playlist_id\":144207},{\"type\":\"playlist\",\"playlist_id\":80718},{\"type\":\"playlist\",\"playlist_id\":14472}]}}}",
    "nonce": "0x40f0f1ceca89d896fe3477fe9b6320fc6fd917d62f615e01b110380439dbffe5",
    "signature": "0xa980d3fb693fc572ac4e59124c8c3f5f2f27fc9c8142788c97856683ca3ffa614351692b5f24e42f5eb8f26173c3dcc9986d502c4634e58e7cd070c3d6e7d9701c",
    "signer": "0x6F272bE0cf1929131937536d1E57b571a5bEd994",
    "userId": "477662771"
  }
}