{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18872025",
    "entityType": "User",
    "nonce": "0x668f3c488cc3ce5fda92f62602f435b19a5090917cbbebe31d28c7610e65abf4",
    "signature": "0xef385ea02327ce695afd39d79293327dc561c0bb619d783912866de7c6e2b86d10abd83853fc338e54f1771d40daa5b06d37c90c97357f4d790b642464f7327d1b",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}