{
  "manageEntity": {
    "action": "Update",
    "entityId": "511698349",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera2cstwm5vsxpoudbwod5tpmjaugaw7wq66frzo26os3jq33wkfn4a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":413945353},{\"type\":\"playlist\",\"playlist_id\":1999015122}]}}}",
    "nonce": "0xa1e151aad24eab6483a80ae01cbd2912c7cc7cabb5250a821661630284f9e53b",
    "signature": "0x0bdefc66d8594bf337573ea0c49d784be33abbe193252dfa1e1e623cb65599d41c8b6181d24688eda2351afdf7e9739c5d6d39309eb53d2f6b49cbae9b6223681b",
    "signer": "0x10bb2D17C512CF574a9c388986b5f2cDbE1dC22A",
    "userId": "511698349"
  }
}