{
  "manageEntity": {
    "action": "Update",
    "entityId": "322417563",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4ced758ea492538754b029dfecfa1c8e2ff30eef6d2e2e6da1a4225c8fe10bc8",
    "signature": "0x660a029dd06e7ba5e79229fba10c4c7df56e70832667bc55b8ca62b9d26b7adf483481871c4f348905a57df97f134b9bb56416a5dc8cb8d4a49be0ea5e340f7a1b",
    "signer": "0x939a8009d94fd9Ae9C4129EF1cFaEf3e2EAa8877",
    "userId": "322417563"
  }
}