{
  "manageEntity": {
    "action": "Update",
    "entityId": "350957781",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierawmnt6iusrlpnntf6nfvhpy7rmtf73dna676agxagemby7fo5slva\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1851424531},{\"type\":\"playlist\",\"playlist_id\":1065725673},{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":435677023}]}}}",
    "nonce": "0x069d110540b66c7ce1ddc57d94c2eecef5cfdb06416b691491680301cf797170",
    "signature": "0xcb6e31bf220fa908a7b68c844af686a2b2ad83e3e5ec3a9395751664ad2fb2c7593e5f755656cb5c002505d014011ae174f596963b0dd4716854641c1f08c0f11c",
    "signer": "0x9742BFcda3E998678A9f313149c705E80899d5c5",
    "userId": "350957781"
  }
}