{
  "manageEntity": {
    "action": "Update",
    "entityId": "508547804",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierauk434grdfesgrc5gwilrcminxt25m7yzfbisqkyjh5y253fc5mdq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":773215712},{\"type\":\"playlist\",\"playlist_id\":520331743},{\"type\":\"playlist\",\"playlist_id\":469299941},{\"type\":\"playlist\",\"playlist_id\":28356},{\"type\":\"playlist\",\"playlist_id\":75814}]}}}",
    "nonce": "0x65645e9da17cb18fe8601c1d28a0d335f554eadfb116fa3948d164c40d78399c",
    "signature": "0xda6f5d11f20f517bb032bd636c5220379f9f8ce0e815dec2b4ae0e85fcd1a1ee0b83c8267dec04bb9d2aaa67178076532c6b7611c429283078218d87058b185d1b",
    "signer": "0x5D040c7e172B07431383B4bd6Fdd84ed67B8Ba0f",
    "userId": "508547804"
  }
}