{
  "manageEntity": {
    "action": "Update",
    "entityId": "472536516",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x01f75ac5648c5ab80f319a4ad5d1a396a697769091acecd8a8a1a635466c7336",
    "signature": "0xb4c87412a7be3569c90fe3206027dcf5d07dd113fd2d1eb81a1fbd11163633f76db8d36c80d8aa24f207675351a82e8a43a684837956225be42a20ef225ab5731b",
    "signer": "0x1A81b9e556cD3FE98A741c33EE64C55cDA2FdAfa",
    "userId": "472536516"
  }
}