{
  "manageEntity": {
    "action": "Update",
    "entityId": "651204786",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4b12402ff8028d8b7887671f33a7ee6af7b4f9a7c778ff3ebb36dc8e76ee9958",
    "signature": "0x5c46bc3dd79d5e045ca50fa4ada79a0e53b8d56c3de6a2ca6c64ca5cb29837d14e8c2ce647e987ebd90ec9174240a214c2dff7255a30781893ef53a94394001b1c",
    "signer": "0x693cD238440C3be2717f3D9C30FC0E77DDCE0C18",
    "userId": "651204786"
  }
}