{
  "manageEntity": {
    "action": "Update",
    "entityId": "194963084",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierahwbilwmhybslmr364e26bojzj7swxgz752rjvt3um6zzttlsixoq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":684691407}]}}}",
    "nonce": "0x70d9e956e30e42f9b1b84234ef8056be7a1e8fe044866b1efaf81ce81888f6ed",
    "signature": "0xe5ee57b3e33e20ea92ce80d3e53a47602d75bcd7811026aa391f67d1c71582ae30917735e3f8065b2d621af6285db3fb6a16bc5f6e8c0b21acb83377aff0867c1b",
    "signer": "0x52C54744FeC93B156A460Db7FccF10e22b6FEdf0",
    "userId": "194963084"
  }
}