{
  "manageEntity": {
    "action": "Update",
    "entityId": "258906806",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x17b1521bb34fa976fd7495d87ae946380ff0937beb41c58b6fe903f751c529fb",
    "signature": "0x0a28e9527eb9bb66b041e95f1184fd5f4ed77c701be40f4bef1f0b117a7457695fb53ce50c19ba57d0a3fa7d1164696bb094b6d98679d010c8c91793706b29d01b",
    "signer": "0x89609d16cef1A091bE64a153C8E4bFfd97102597",
    "userId": "258906806"
  }
}