{
  "manageEntity": {
    "action": "Update",
    "entityId": "868839581",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5e530368179923851128f22e431866ea553d65bf33110068d1310dd51b38ef65",
    "signature": "0xb9eb75bce5234cb3c55add5131bcb9edb63c97612d16c219a8f6eb4bb039905f4ee1732016b3422be5e7d0b99058017bbcf738a8ac44bb33e8e1888ef73e44b61b",
    "signer": "0xD45c94f037Bd386dB720038e64a1C407400650A1",
    "userId": "868839581"
  }
}