{
  "manageEntity": {
    "action": "Update",
    "entityId": "988378847",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7395100852bc5b8dbe2808d6c4b84c415059bae5ee8ec335946f37b74b85b6ae",
    "signature": "0xe741192c9bb1a046e761c7baf319d7cc41b65b0df22ef63fce2c665371f441f62891179e86ee8b30b01b7e56b67b20b55d2637a6c12e99c1c358da83c7b1a8321c",
    "signer": "0x5dd44D2a666f80E78cE8f0969F625DbE63939cbF",
    "userId": "988378847"
  }
}