{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x796c61648cb18d56daedca341372c54e7dfbc31bdff15e730d3576a46a268973",
    "signature": "0xdb913b17427aa164d1d41eb6e347f97bcd7cc2bf55eb3f2bda9b71f12c595ecb3b5284df07c6607d740f0fb267b58e314cc0d386214fa3266743d1cc45672eb71b",
    "signer": "0xFe4E972E3ec8D8d619816F5644f74CB5bA1B01b1",
    "userId": "219239808"
  }
}