{
  "manageEntity": {
    "action": "Update",
    "entityId": "152141710",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x278333305e28d57a6545ae6c4c83bfc33f93f8436a62fb1543d3c456155e1850",
    "signature": "0x8d8b3bd39ca91769c28de3c9ff2a59091ca5a05249cb9d763b4d2738b1b3144c6cce5ec25c362436d2ad65b9ccaf651b3788d5402bfd70f8d24856ec5109b35e1c",
    "signer": "0x9930cFe3EDEbE0458BC7a7dE33D87aa68cfaf8E1",
    "userId": "152141710"
  }
}