{
  "manageEntity": {
    "action": "Update",
    "entityId": "831640099",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x720d51d6513395545997bf0c6c67d3033ae2cee4d4f522ca114c96ed81bd622d",
    "signature": "0x0af1ced9005cd4a8b38ecdd5ae1cf4f88001f39cbbacbab9360543909e4bad131b8368b5b73fdec59c71bb850e7414c9d2846722257c901508740eee31d2667b1c",
    "signer": "0xf0FB6Ee8Ad56eA2e147d118ecaa4eB46cf03b448",
    "userId": "831640099"
  }
}