{
  "manageEntity": {
    "action": "Update",
    "entityId": "308623477",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratrajanfpj6ckvyv4y55exce62buumbysyrx3idwjhdyiz3qayt5q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1647181557},{\"type\":\"playlist\",\"playlist_id\":1335713567}]}}}",
    "nonce": "0xb496f0450a13fa07141af69f3db71518695b964089d3f59594786b3dddad3b3f",
    "signature": "0xe2044356a17fcb51c1be72f489e013436822d13338202966333d9e16f64fa46e3e1759ad6f37ede2094397206e0507f296578be8c5dc2783ee04ca6b8b9883021b",
    "signer": "0x6D743436eC5c0BFbaF82Eb6E5c44B035d345931a",
    "userId": "308623477"
  }
}