{
  "manageEntity": {
    "action": "Update",
    "entityId": "73171087",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieransepxmu67wjtorwinar4ftuksnvas6m3o3qejnzcyug4zvjfxawa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":450732995}]}}}",
    "nonce": "0xad65c88c7da39987be632003b0f248ddb84f84f2111d85d63d3bf6762af81fba",
    "signature": "0xef50ef5dfee1d4d137cd34a05670cce89ecbd89d18cb35145866d8211f8b5ce25665ec0cbffc8bd06b019bf19ceec33cf1ad5ccb9307508cd098cc12945b5e3d1b",
    "signer": "0x49F5CB1C712E0A69809398fE021346281650cd19",
    "userId": "73171087"
  }
}