{
  "manageEntity": {
    "action": "Update",
    "entityId": "210238039",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd69f2bb3d7ff67cd7db87258905f7ad4730ad6a9d4fea21a0c01a1d4b293a90a",
    "signature": "0x3b8ff14f54140569e56c1a8f1a42c30766dd7790a9d83d55c13642fc7a61718c7bb3906b42ccf89bfb021b48a55c4086fa29fc01c1fe1af100de320e0a5fd6cb1b",
    "signer": "0x195F240E0217710e290AD21A423aFb94fEFdFc62",
    "userId": "210238039"
  }
}