{
  "manageEntity": {
    "action": "Update",
    "entityId": "379535209",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieranyv55venemvdulbusw7qz2hed3tj74xpsklvufwthlqd33kyi2la\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":50164147}]}}}",
    "nonce": "0x8674c664b42840311f9ef8853db66da79209b235f19ef85e9803b2a70f1bee5b",
    "signature": "0x3fa37a1bad6ca0f59c84adb2c69c774709f97c635453d0266d225605a303c95b2cd22aeaa929a34204b728a5cf96dc2318b3d938dfa83c3498661a36235696451c",
    "signer": "0x6Df7B01ee30e7353a7dF89B63420614C8b73A67C",
    "userId": "379535209"
  }
}