{
  "manageEntity": {
    "action": "Update",
    "entityId": "6838510",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieramomuhtmt2kcpudmjii7kbsrkedvfmjgcwrijpftdfp5nxehhncsa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":46674903},{\"type\":\"playlist\",\"playlist_id\":768401314},{\"type\":\"playlist\",\"playlist_id\":632180508}]}}}",
    "nonce": "0x271e462c425a4787d3b06b5a60a12d3e435151a94622e48521c8c431bff0e304",
    "signature": "0x93d1b83e1aac08eaa97695c5ba5b5c6625ee93d0ed78d3abe28c4aed389d981042701c4f29348f007997cd5710c9f935bb02e0b2ad2d548dd2dd184de97e37221b",
    "signer": "0x58Fd15cF8652ad74664BE5E78b4D09ab32Ce73Bd",
    "userId": "6838510"
  }
}