{
  "manageEntity": {
    "action": "Update",
    "entityId": "879761069",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5b66787fae3f8d468d099c16b86f263de3b35de88dd80e76f3fa544939b5ae97",
    "signature": "0xf5799a2706424f8a352612410b10912b51dc474eee91ce5fe27f4a709becd3f056fbfa5acc7336aa12b7ddee76370d2a0e79dbb719a88a81f489a2d73748a7ba1b",
    "signer": "0x6F6826e2AAe720815B63697437D8A39B47d76D66",
    "userId": "879761069"
  }
}