{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb479a42c68a922e3fc8872c68c57ca5571e8e5be0aa2e0d743a19ef88badd381",
    "signature": "0xf2ed7c59f98b9f53d83d9793bf607e3249799ad2e402edd039c532581e1d695e5d375d583488dece87314bb674c2971c1485f4ff8c39234f872cc4f1bd12d5141c",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}