{
  "manageEntity": {
    "action": "Update",
    "entityId": "370091516",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraskzmjj4plxkev2mmzbnzemlx6zyvna5trr3t7pdvcbmhk6cyb2xa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":487744262},{\"type\":\"playlist\",\"playlist_id\":1420596467},{\"type\":\"playlist\",\"playlist_id\":1394640885}]}}}",
    "nonce": "0x99f830ae5632ad4604e623caef4a005d724c32fe3fdd62cef848ae980a666b14",
    "signature": "0xfc3afe8acf752b6de4215b2ed2ee5e87137626cb498f964d03577e5d284e01fb51d1281d91256daaffbd2565ef5b740b8d9cae75a97e77725edd85890ed7849e1c",
    "signer": "0x15B9643abE09bd37C52a5BD1dCF938B05b06cBFB",
    "userId": "370091516"
  }
}