{
  "manageEntity": {
    "action": "Update",
    "entityId": "290369133",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe0e432e92a9605d1cd700bef6c8c692a88729acf51e0e77a0957fc9acb61f8ce",
    "signature": "0xa4cd9f459b02c95be4bcf34fd6581efc690cde8e934efec1beae271bc1c847d6474f553ff2b0514a52697aae7bcb1c964c839d8f32f3680c63e97539d6ee89051c",
    "signer": "0xDeF7b7Dcc18B5220d812AabBC02a919ac473db7E",
    "userId": "290369133"
  }
}