{
  "manageEntity": {
    "action": "Update",
    "entityId": "721987098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x82136cfce4f3ff2319a47adce4067e94fb06c482269fe0a1dfe518a41bef7586",
    "signature": "0xd21b271ca5b41c2bea675e4b318c7e33da42118409d65c6aaa9541465eb6a1420909af817a44c75a5a8e39309543473f027dff30f13db838238389ec8f1a99a01c",
    "signer": "0x4c2B6D597D288449d9F215489E66f1cCe1c85B8F",
    "userId": "721987098"
  }
}