{
  "manageEntity": {
    "action": "Update",
    "entityId": "422383007",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd6da48c947c1c04ae15f956a1c6105f6bf5c774d5b9630cbe261e725612ccb20",
    "signature": "0x73a4d8d492f13c7096f90869870d79f34ac592635a0c4b4ae7bb16fe531b6549037f29fbbecd54b05aff49f41233e9552b18bb8dd726b3dc124871bd2575a2241b",
    "signer": "0x4466e1a64e35Dbca375F17dc03485C9C5c71F49c",
    "userId": "422383007"
  }
}