{
  "manageEntity": {
    "action": "Update",
    "entityId": "499031899",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieramqq2eivcg3wolz6mvvkvaclzdvyie3vuqfimhhaciiwbmh6ihcqa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1782177892},{\"type\":\"playlist\",\"playlist_id\":315116408},{\"type\":\"playlist\",\"playlist_id\":657354066},{\"type\":\"playlist\",\"playlist_id\":1255879094},{\"type\":\"playlist\",\"playlist_id\":140294347}]}}}",
    "nonce": "0xbc8ebede76f388abe082f1c4faa35ccdd5bf6af78a199b21defd5cbf847658e1",
    "signature": "0xcdbf5c1a6ef146613fda922326abc978a9d1b011e923a114b5f02c601ba823e16d645bf949b7b7667095bb3a67921edac152222ef05b893ee7fcf50494877c971c",
    "signer": "0x19150FDAcDb37660CCF281ebD651B85b2f362021",
    "userId": "499031899"
  }
}