{
  "manageEntity": {
    "action": "Update",
    "entityId": "215504694",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb9f2d5d95ceb133bb194e859edef4b2ceba9882d1ac659488e9dab4f6eecaec3",
    "signature": "0xcb88c952797738a70f40c2b958466ed3f112c869e960ba02e9dd86c9c6140a3d20af87e508f4522b8cfa742c813307dc94136b55c81475d8aa3b7245834cbe731b",
    "signer": "0xB1FC6Bd0C1F79C1023a5c35a5eE48df68594488e",
    "userId": "215504694"
  }
}